30 definitions by manda

a) An insult towards another person when they act smarter
b)somthing to say when theres nothing to say
c) an insult when your pissed at sum annoying mutha fucka
a) emma: nononono, 5% is 0.005 of 100!
sam: ya mum is 5% of 100
b) emma:blahblahblah im hungry
manda: ya mum
c) emma: WAAAAHHH my life sux, NIrvana rock!
manda: ya mum!!!
emma: what about her?
manda: shes ur mum
by manda June 8, 2004
Get the ya mum mug.