Me : Who am I?
H : Mammy! (in London accent)
Me : noooo. I am MUmmy (in Northern accent)
H : You're not my mum! (in northern accent)
Me : Noo, I am your MUmmy.
H : You're my mammy!
etc etc etc
repeat to fade.
H : Mammy, we got on the BUs. It's not a BUs. It's a BAs.
Me : whaaa...?!