During a fart, when air is compressed between the grundle and a hard surface- the air erupts to the nearest exit, usually out the front of the crotch. It is thunderous, not just for the thunderous noise it makes, but also because of the unsettling direction of the blow.
by ceegee2 January 23, 2013
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Get the Thunder Mallet mug.Someone who leaves your innards feeling abused. A guy who is often portrayed as a douchebag but rarely is one. A hot guy who is great in bed.
Guy 1: I was talking to Annie yesterday, she said she hadn't been able to walk, and was feel like crap
Guy 2: lol, apparently im a Thunder Pounder and i didn't even know it haha
Guy 2: lol, apparently im a Thunder Pounder and i didn't even know it haha
by Derkalurk March 17, 2011
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Get the Mud Thunder mug.a girl with perfect hips and thighs and knows how to rock a bikini. Usually has the best body out and goes perfect with abs. Thigh gaps arent even needed if you have thunder thighs, your basically perfect already! be careful not to judge people by this, and dont use it against them.
thunder thighs are the opposite to fat so dont make it out to be
thunder thighs are the opposite to fat so dont make it out to be
by biggesthottayevahh November 26, 2013
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