Top Definition
The act of bending your erection down and tucking it between your legs, then proceeding to squat up and down with a thrusting motion until ejaculation occurs. Effectively, having sex with your own thighs.
I'll never have to use my hands to masturbate ever again, now that I have mastered the Thigh Blaster.
by Fet Nite February 15, 2012

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