a pound or a punch
A streetkid in London tells a rich person to hand over a pound or be ready for a punch that'll leave them sore for days.
"Your money or your face, I don't care which!", A streetkid to a tourist.
"I'll take your pound or I'll punch you until you're happy!", A Londoner to a shopkeeper.
"Your cash or your punch, don't make me choose!", A streetkid to a rich man.