Top Definition
Masturbating and pulling back the penis while tea-bagging your partner. Then as you orgasm you let your penis flop down striking the person in the face and spreading goo all over.
Whilst a young lady is enjoying a teabag session. The courteous male would hold his phalice out of the way so he can see her pretty smile. He continues to masturbate until orgasm and as he reaches his climax, he lets go of his penis slapping the young lass right in the eye delivering a perfect st. louis slingshot. OOOOH, that's gonna leave a mark. Welcome to St. Louis.
by arhandjeo April 07, 2008
5 Words related to St. Louis Slingshot

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