Acronym

B1G1/BOGO (Free or 50% Off) = Buy one item at regular price, get one for free or half price
ECB = CVS Extra Care Bucks; to be used like cash at CVS on your next shopping trip, usually expire 4 weeks from issue date
ES = Walgreen's EasySaver; monthly coupon and rebate booklet good at Walgreen's stores
GM = General Mills coupon insert; usually included in Sunday papers once each month
IP = Internet printable coupons
MFC = Manufacturer coupons
OOP = Out of Pocket
P&G = Proctor & Gamble coupon insert; usually included in Sunday papers once each month
RP = RedPlum coupon insert; a standard insert typically in each week's Sunday paper (with the exception of holiday weekends)
SS = SmartSource coupon insert; a standard insert typically in each wee's Sunday paper (with the exception of holiday weekends)
RR = Walgreen's Register Rewards; to be used like cash on your next shopping trip
TQ = Target coupons
WAGS = Walgreen's store coupons
WYB = When you buy
YMMV = Your Mileage May Vary or Your Market My Vary; this refers to sale pricing and different store's coupon acceptance policies -- your actual savings may vary from what we have listed here.
*Credit - This list was taken from BeCentsable