Top definition
the phenomenon of cats falling asleep in certain people's laps. some people just have an amazing ability to induce cat naps at any given time. these people have tryptophan thighs.
wow how did you make butch cassidy fall asleep so fast, he was going crazy a mere 5 seconds ago.
idk, it must be my tryptophan thighs, he's passed out already.
by the Juan + only March 10, 2009
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug