When blowing coke, molly, or ice into your partner's ass with a straw, and the small
differences in air pressures between the
atmosphere and the colon suddenly equalize, resulting in a puff of drug mixed with sewer stench back into your mouth.
The dreaded kickback, as it were. Also known as a Topeka Truffle.
For my girl's birthday, I thought I would surprise her with an air-boof of molly, but instead
the surprise was on me, as I became the
recipient of
the dreaded Kansas Kickback.