1. An utterly stupid and terrible response to a comment or insult when someone cannot think of a comeback.
by Jarrow767 March 11, 2015
 Get the Your mummug.
Get the Your mummug. A hilarious insult that me and my friends say constantly, people say that there is no come back but there is.
timmy-u stink
me-ya mum stinks
timmy-ya mums dad stinks
me-ya mums dads family stinks
timmy-ya mums dads familys face stinks
me-your mums dads familys faces mum stinks
and so on
me-ya mum stinks
timmy-ya mums dad stinks
me-ya mums dads family stinks
timmy-ya mums dads familys face stinks
me-your mums dads familys faces mum stinks
and so on
by PF2111 December 25, 2007
 Get the ya mummug.
Get the ya mummug. by jef April 23, 2004
 Get the your-mummug.
Get the your-mummug. Bwoi: "Yo momma, me is goin' down St John's wit mi posse, hang out an shark da-day."
Mam: "Errrr ... half past two?"
Bwoi: "Ehh!! Mum proof!!"
Mam: "Errrr ... half past two?"
Bwoi: "Ehh!! Mum proof!!"
by Lord Ass July 2, 2005
 Get the mum proofmug.
Get the mum proofmug. Kai's mum- A rather raunchy lady, she absolutely loves cock and if you ever talk to her there's no doubt her mouth will be filled with fat knob.
Scott: Hey, Kai's mum
Kai's mum: *choke* *choke*
Scott: Ahh, she's sucking dick, I'll come back later
Kai's mum: *choke* *choke*
Scott: Ahh, she's sucking dick, I'll come back later
by mongoloid69 January 25, 2016
 Get the Kai's mummug.
Get the Kai's mummug. by Joey June 13, 2003
 Get the your mummug.
Get the your mummug. 