RocknRolla, scenen der Archie skolerer hvordan en backhand slap utføres og den psykologiske effekten av det.

Archie: If you can master a slap like that, there is no need for your clients to walk back. They will open up like a fountain full of words. No need for strong violence. Nono.. They´re transported right back to their childhood, "somethingsomething". He thinks he back to school.
Danny: But we no went to school Arch?
Archie: Do you want a slap aswell, Danny? Ey??.. Now if a slap don't work, you cut 'em or you pay 'em, but you keep your receipts, cos this ain't the Mafia.