The unknown and rather disturbing substance that accumulates under your nails following scratching an itchy ass; a less dense form of ass cheese.
Also, a reference to something nasty;
"DUDE! Quit digging in your ass! Now you have rectal butter under your nails!"
"That chick needs to take a damn shower! She smells like rectal butter!"
The intense feeling of warmth you get after laughing really hard.
"Man! I laughed my ASS off! It was so funny I had gigglespooge!"
8👍 4👎