Churning Community Slang 101
A beginner's guide to common churning abbreviations and slang — from the basics to each bank's application rules.
The Basics
The abbreviations you’ll see everywhere.
Churning Repeatedly applying for bank products — credit cards, bank accounts — to harvest sign-up bonuses, then deciding whether to keep or close each one before cycling into the next.
SUB (Sign-Up Bonus) The points, miles, or cash back you earn after hitting a spending requirement on a new card within a set window.
DD (Direct Deposit) Payroll, government benefits, or other deposits that go straight into your bank account. Many bank bonuses require one to qualify.
Fake DD Triggering a bank’s DD detection using non-standard methods.
FTF (Foreign Transaction Fee) The fee banks charge when you pay in a foreign currency — usually 2.5–3% of the transaction.
MS (Manufactured Spending) Artificially generating credit card spend without actually buying anything of lasting value.
HP (Hard Pull) The credit inquiry that shows up on your report when you apply for a new card.
SP (Soft Pull) A credit check that doesn’t affect your score — things like checking your own score, bank pre-approvals, or credit limit reviews.
YMMV (Your Mileage May Vary) Same setup, different result. Could be bank policy, your credit profile, or just luck.
HUCA (Hang Up, Call Again) Don’t like what the rep said? Hang up and try again with someone else.
AU (Authorized User) A secondary cardholder on someone else’s account. Sometimes the primary holder gets a bonus for adding one; sometimes the AU inherits the primary’s credit history.
PC (Product Change) Switching your existing card to a different product within the same bank — without opening a new account or taking a hard pull.
CL / CLI (Credit Limit / Credit Limit Increase) Your card’s spending cap, and the act of getting it raised.
AF (Annual Fee) What the bank charges you each year just to keep the card.
DP (Data Point) A real-world report from someone who’s done the thing you’re about to try. “What are the DPs on this card?” = what are people actually seeing?
VGC / MGC (Visa / Mastercard Gift Card) Prepaid gift cards issued by Visa and Mastercard. Common tools in MS setups.
“鸟” BB / Serve The nickname the Chinese-language churning community gave to Amex’s prepaid/debit products — Bluebird, Serve, and variants. (“鸟” means “bird.”) Back in the day you could load them with VGCs and liquidate. They’re being shut down in June 2026.
Retention Offer Call to cancel, and the rep might offer you points, a statement credit, or an annual fee waiver to stay. Worth trying before you actually pull the plug.
Triple Dip Timing your card application so the card year resets while you still have access to the previous year’s benefits — meaning you can use the same benefit (like a travel credit) effectively three times before paying two annual fees.
EO (Executive Office) When normal customer service hits a wall, escalating to the bank’s executive office sometimes gets things done.
MO (Money Order) / “馍” A payment instrument issued by banks or post offices. In some MS chains: buy MOs with a gift card, deposit the MOs into your bank account, pay off your credit card, repeat.
MDD (Modified Double Dip) Exploiting the brief window before a bank’s systems fully process your first application to sneak in a second application — getting approved for both before a denial from the first one blocks you.
“骑车” (Credit Cycling) Max out your card → pay it down → max it out again, all within the same billing cycle. Banks technically allow it but watch for it.
“蛋白粉” Buying high-cashback items through a portal — protein powder and supplements were frequent flyers in those cashback categories, so “蛋白粉” (protein powder) became shorthand for the whole practice.
“睡衣流” The category of MS methods you can do entirely from home in your pajamas. No store runs required.
Application Rules
Chase 5/24 If you’ve opened 5 or more new credit card accounts across all banks in the past 24 months, Chase will deny you. This is the one rule that shapes most people’s card strategy.
Amex 2/3/4 + Lucky 7 No more than 2 credit cards approved in 90 days; an unofficial lifetime cap of roughly 3 personal cards per product family; and no more than 1 card in any 7-day window (the “Lucky 7” rule). Charge cards usually don’t count against these limits.
Citi 8/65 & 24/24 No more than 1 Citi card in 8 days, no more than 2 in 65 days.
Bank of America 2/3/4 No more than 2 cards in 2 months, 3 in 12 months, 4 in 24 months.
Barclays 6/24 Some Barclays cards require fewer than 6 new accounts in the past 24 months — similar logic to Chase 5/24.
Once Per Lifetime Some SUBs are a one-time deal. Once you’ve gotten the bonus on a particular card, you’re locked out forever.
NLL (No Lifetime Language) Certain targeted offers or special links don’t include the once-per-lifetime language. Apply through an NLL link and you might be able to earn a bonus again even if you’ve had the card before.
RAT (Rewards Abuse Team) Amex’s internal team that audits rewards activity. Heavy MS, frequent open-and-close patterns, or large refunds offsetting spend can get you flagged. If they come knocking, points can be clawed back or accounts shut down.
3X CLI After holding an Amex card for 61 days, you can request a credit limit increase online — sometimes up to triple your current limit.
48-Hour Rule (Chase Reconsideration) If Chase denies your application, call the reconsideration line within 48 hours. Sometimes a quick conversation flips the decision.