The act of opening up your hand while your fist is inside of either an asshole or a vagina.
man i totally frag grenaded that chick's ass last night
by storkut January 18, 2009
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A marker most commonly used to indicate where you should not be standing
rather dashing Englishman: Oh My! there appears to be a frag grenade at my feet!

Quite a proper sort of chap: Well it is rather a good job someone put that there or you wouldn't have known where you should not be standing is it not
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A fragmentation grenade or "fragnade" is a type of grenade in many shooter games. They can be used for drawing the enemy out of cover or in suicide bomber attempts by cooking a frag near the enemy
by AjDaWise November 18, 2016
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After having sex the man removes his condom lights it on fire and slaps the woman in the face with it.
Dr. Gomez: Man, last night was awesome!
Janelle: Why?
Dr. Gomez: I gave my girl a Tijuana Frag Grenade last night and she almost puked!
by BMan123 May 11, 2010
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