by Tigerrossa September 1, 2021

"THUNDER THIGHS" are a fat girls thighs that are so humoungous, big & fat that they clap together when they walk. This produces a loud noise which goes like "SLAP, SLAP, SLAP" , hence the "thunder" part of the word.
by Emily December 28, 2004

by Light Joker September 7, 2004

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

by T-MONEY May 1, 2003

by jj colt September 17, 2003
