look up any word, like timebomb:
 
1.
Cute way of saying "Baby", often expressed to your Lover.
"Hey Chunky butt, How are you?"
"Who's my chunky butt?, Yes you are"
by Felix Santos May 08, 2008
 
2.
A girl who has a little weight on her but not enough to call her fat.
That girl isn't big, she's more of a chunky butt.
by TheMightyMos December 16, 2008