When you kick someone's balls off and send the flying like a rocket.
Jerome: I gave that motherfucker a pair of rocket balls.
by Cumcoconigger May 12, 2021
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When you're smashing your girl (or guy) so hard that you explode and take off like a rocket and it takes you to Mars.
Guy 1: Bro I just Rocket Smashed my girl last night that was crazy.
Guy 2: Yooooo no way that's crazy!
by sistersmasher69 June 13, 2021
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It's pretty self explanatory… firing a rocket and coming out brown…

Pretty much when you fuck a butt hole and you pull out and you have shit on your dick.
Bruv, I gave that chick a hell of a brown rocket last night!
by Innapropriat-ness. September 24, 2015
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