foster mud mask

where a guy shits on a girls face, then rubs it in and lets it dry

woman: hay honey my pores are feelin a little dry.
man: do u want me 2 give a foster mud mask.

by yazpikle July 22, 2009

Foster Flop

Foster Flop is an Australian saying, humorously describing the inability to get an erection after drinking too much beer.

It is comprised of "Foster", as in the famous Australian beer brand Foster's, and "Flop", as in "to fail completely" or "to fall heavily".

Last night after the party I wanted to root her but I Foster flopped.

Too bad you had a Foster Flop, otherwise we could have had sex.
"Did you have sex last night?" "No, I couldn't. I had a Foster Flop."

by MoMaB July 22, 2012

Foster Effect

When someone you invite to a group or event, (usually a female) hijacks said group or event for their own purposes or desires.

"Wait, Faith doesn't want to go to Maude's Cafe? We decided on that weeks ago!"
"Yeah, so due to the Foster effect we're now going to the Westbrook Diner because that's what Faith wants."

by Hahayeah11 June 7, 2019

foster nigga

A man that gets with a woman a few months before tax season and stays with her till the end of April maybe May just to mooch off of her until she can give up Half her income tax return

Girl this foster nigga stayed with me and took half my tax money then left after he used me up

by Kween Kellzzzz October 6, 2019

Foster cats

foster cats are the best they come in to your holes for a bit you take care of them then they go but just now there’s more Coming go your way.

Foster cats are just part time pets because they will go to a home🐈

by The_cat_lady:) November 8, 2019

Foster wife

A girlfriend that you spend time with but don’t have sex with.

Went to the beach with my foster wife and her kids on the weekend

by MrRm August 16, 2021

foster's

Australian for piss water

i was so thirsty i almost drank a whole 32 oz. can of foster's

by FreQuent FlYer MylEs May 3, 2004