A euphemism of the word flesh commonly used by cannibals to promote the consumption of one-another's epidermis.
Danny: Take a look at that chicks fleash coat!
Brandon: We will feast like gods tonight!
What is left in the toilet bowl after flushing when a girl on her period (heavy flow day) had explosive diarrhea and queefs out a bloody used tampon.
Casey: You don't look so good.
Ally: I know, I ate some bad chinese buffet and I am pluggin' it. I think I need to go fleash like a mofo.