When two of your friends finally get together and they become the Mum and Dad of the group.

It usually means they are a very wholesome couple.
You and Becky are Mum and Dad!!!
by Wholesomeshitposting May 26, 2020
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When you have sex with both of someones parents and position yourself in the centre to become the filling
I'm off round martins house to have a mum and dad sandwich with his parents
by mitch00uk March 25, 2015
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MDMA Crystal. The substance that gets you High in E`s in it`s purest form. Often in bluey green crystals
This Mum N Dad is Mega.

You got your Mum N Dad comin out?
by MC Timmy G June 22, 2006
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The Bank of Mum and Dad:
n. Money acquired from one's parents that doesn't have to be repaid... or the borrower doesn't intend to repay even if they are supposed to.

Said in a smug way by the people who use the 'bank', as they think they've got free money from their parents.

However, the parents know it exists and use the phrase in an annoyed kind of way... Like they know that the BoMaD exists and that it isn't right, but they can't do anything about it.

The BBC programme of the same name showed that the BoMaD can last well into a person's 40s, provided their parents are still alive.
Person 1: "Hey man, you coming out tonight??"
Person 2: "Hmm I dunno, I've no bus money or money for drinks or money for a brand new and expensive outfit or money to spend on other people or money to pay the strippers with or money to buy fat cigars or money to get a limo home with..."
Person 1: "Bank of mum and dad, man!"
Person 2: "Oh yeah! You're on then!"
by gratedraindrop February 22, 2007
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retarded answer to any questions you cant or dont want to answer
kinda like answering with ya mum buts it gives you autism
Me: "Do you watch scat porn?"
Friend: "Ya mum's ya dad"
by cancerious fucker May 27, 2017
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ya mum's ya dad
ya mum's ya dad
by reuben herdbeurger October 16, 2020
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When you would like to annoy someone its polite to let them know that there mum's their dads aunty.
Hey Tom guess what ? Ya mum's your dads aunty
by TheCluck June 6, 2019
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