A pancake mix, similar to Bisquick, except that it is solely consumed by women during their time each month. It is believed to be the source of womankind's bitchiness during this cycle. It is an illicit substance, but completely untracable.
Tom: Hey Jennie! How's it going?
Jennie: Don't give me that "how's it going" crap!!! Your such a fucking ass leave me alone!
Tom: Whoa... did you eat Bitchquick this morning?