A man or women that has massive thighs and legs that look fat, possibly disproportionate to the rest of their body.
Look at those woman's legs, she has thunder thighs
作者 D_masters 2012年6月10日
muscular thighs that anyone would want. Thighs of steel. Usually thighs of a soccer player.
Laura: How's soccer going?
Jamie: It's awesome, check out my thighs!
Laura: OMG, you have thunder thighs - hard as a rock,
作者 Tiffffany 2011年7月21日
enourmously huge thighs, usually matched with huge slabs of fat falling over them.
Dude that chick has major thunder thighs....i could climb into one and live
作者 Chelli 2004年9月11日
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
person 1: dayumm girl you got some thunder thighs!

person 2: biggest hottie out
作者 biggesthottayevahh 2013年11月26日
When a person's thighs are so large, they clap like thunder.
Did you see that girl's hips? Damn she's got some thunder thighs.
作者 hKbA 2010年10月17日
Basically, you have normal thighs, then they get fat (tier 1). But when they get like even fatter, you get another level of fat like a hill of fat(tier 2), which is loose off the other fat so when a thunder thigh is being walked besides the legs (tier 1) rubbing against eachother they (tier 2) hit eachother making a noise, hence thunder coming into the expression, most likely to because of alliteration for a dramatic, comedic affect. This sound can have a brighter tone and richer feel if accentuated with bumpy cellulite
Damn, those thunder thigs are so massive it looks like shes got a second arse

It's like someones stuck balloons in those thunder tighs

No, no....come on, this cant be real, that girls got thunder thighs ripping out like the hulk
作者 F-Laboyrie 2007年5月31日
When a girl has enormous thighs that make you waddle when you walk.They rub up against each other and make a slapping noise when walking
Damn that girl Krystin got some thunder thighs on her.
作者 Melissa Sanderzzz 2007年6月05日

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