The gorilla sits down, grunts softly and points to a picture of a pint of beer on the menu.
The barman pours the beer, hands it to the gorilla, who again grunts softly and nods. The gorilla slaps a $100 bill down on the counter and slides it toward the barman.
The barman, figuring the gorilla was trained to do this, but would not be smart enough to count, took the $100 and passed $10 back to the gorilla, who grunted and huffed in reply.
The gorilla downs the rest of the pint, turns to leave, and the barman says out loud, to no one in particular, “Jeez, we don’t get many gorillas in here.”
The gorilla pauses, turns to glare at the barman and gruffly remarks “At $90 a beer, I’m not surprised.”