trouser monkey 

One who hangs arounds anothers pants...

Trouser monkeys get A LOT

trouser monkey by ixx February 11, 2005

shake money off his trousers 

have so much money that one can give some to somebody on demand at once. The possessive adjective may be one's, her, my, our or their as the case may be.

He is so rich that he can shake money off his trousers.

shake money off his trousers by uttam maharjan March 30, 2010