[the previous day, Granville sold some anchovy paste to Wet Eric as an aphrodisiac; now Wet Eric comes limping up the street in considerable pain]

Wet Eric: You ought to be locked up, selling diabolical stuff like that. I've never had an easy moment since I put it on. Talk about scratching! I'm going to be red raw.

Granville: It was for *internal* use, you barmpot! When I said "Spread it on thinly", I meant on a piece of toast.

Wet Eric: Now he tells me!