1. slang Fat or chubby thighs. I really want to get rid of these thunder-thighs, so I've resolved to start eating healthy and exercising three times a week. Their three-month-old has the cutest little thunder-thighs you've ever seen!
2. slang Someone with particularly fat or chubby thighs. Gosh, you were quite the thunder-thighs when you were a baby, huh? A: "Maybe you should lay off the fast food, thunder-thighs." B: "What kind of creep actually says that to someone?"
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. big or fat thighs. (Cruel. Also a rude term of address.) Here, thunder-thighs, let me get you a chair or two.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.