flipped a flopper 

When you're about to have sex but you pull down your jeans and you're still flaccid.

Oh shit Mary, I can't believe I've just flipped a flopper!

flipped a flopper by justsomeblokewritingshit September 20, 2017

flopped a hoagin 

It's when one or both tits fall out of the bra or shirt.

Lastnight my grandmother fell in the floor and flopped a hoagin.

flopped a hoagin by tH3Chuck June 14, 2022