What is Ya Mum In A Bagel?
Ya mum in a bagel is another come back, like ya mum
So after using ya mum you can say your mum in a bagel
KnobChesse: What yah up to later?
Yuh: Yur Mum
KnobChesse: O fuck of what yah doing later?
Yuh: Ya mum in a bagel
See mum, bagel, insult, ya, slang