A woman's breasts; always used in plural form.
Man, look at the loopy funbags on her!
When your SO is about to break up with you so your sex life significantly improves. IE treat her like a slut cuz you dgaf anymore.
You gotta funbag that bitch before she breaks it off.
Proof that the 1980's era slang terms for breasts are embarrassing for us all.
She's got a nice pair of funbags!