What's (something) in aid of?

British & Australian, informal

something that you say when you want to know why someone has done something.

I heard the shouting from the other side of the building. What was that in aid of?

A present! What's this in aid of?

• what's cooking
• what's eating
• what's eating ?
• what's eating someone?
• what's eating you
• What's game?
• what's her face
• what's his face
• What's in aid of?
• what's more
• what someone is driving at
• What someone says goes.
• What's sauce for the goose .
• What's sauce for the goose is sauce for the gander.
• What's someone's game?
• What's something in aid of?
• What's something when it's at home?
• What's the big idea?
• What's the deal?
• What's the magic word?
• what's the world coming to
• What's the world coming to?
• What's when it's at home?
• What's your poison?
• what the hell