an action in which leaves the inside of the vagina fuuuuuuuuucked up while during intercourse. usually conducted by a derek
(after sex)
Girl: holy moly my insides hurt. he straight thunderpounded my shit
by thiis nigga August 13, 2011
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Man who's got the rod and the bod, makes your insides feel abused after getting fucked, someone you have wet dreams about, a DEREK. Usually signified by loud flapping of the ballsack and thuderous noise,
Aww man i just slept with derek last night my asshole hurts

Yea i hear hes a real thunderpounder, did he rip ur asshole open this time?

(kids outside a classroom)HOLY CRAP i think Ms. Shields is getting thunderpounded, shes screaming likea hor and there is a loud flapping going on
by DKMILLER36 March 10, 2010
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