from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Plural form of tharm.
from the GNU version of the Collaborative International Dictionary of English
- n.pl. Twisted guts.
Sorry, no etymologies found.
Not only did this thing get rid of the "tharms" the thigh sometimes found on the arm, the Shake Weight also attacks that pesky back flab, which can be a hard area to target.