Someone who is on the scrounge is asking people for things or for money.

At college he was always broke and on the scrounge.

A word of warning - Jake's here and he's on the scrounge again.

Is your sister on the scrounge again?

I'm on the scrounge for any good quality secondhand clothes I can sell on my stall next week.

If anyone's got a spare ticket for the concert this Saturday, I'm on the scrounge.

See also: scrounge noun