Who’s this guy?

Best definition
Who’s this guy?
1. A phrase which can be used to humiliate a person who you know well, who has just said something

that has either failed at telling a joke, or has just said something stupid or embarrassing.2. Said when there is a stranger nearby acting in a funny or weird way, or who complies with the above.Both are generally said with a thumb in the direction of the offender, and a generic “pfft” noise.

Charlie: I’ve got one of those!

Ollie: Pfft… Who’s this guy? *points thumb towards Charlie*