Top definition
A cleverly disguised shopping bag that is lined in some manner with aluminum foil so that it renders electronic shoplifting sensors useless. Used by shoplifters to secret their ill-gotten goods out of the store unnoticed.
Q. Dude! How in the heck did you lift those 14 pairs of jeans?

A> I just dropped them in my booster bag and walked out the front of the store!
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