look up any word, like potate:
 
1.
a pair of buttocks on a woman
We had great rear-entry sex and I slammed her pushbags.
by little opie January 21, 2008
 
2.
When you want to call someone who is funny and cute, this can also be used for calling someone you don't like an idiot.
"Hey, Amanda over there is a push bag."
"You're such a push bag Amanda."
by malacoth January 07, 2012