Your wife's loser brother. Has tons of good ideas but needs to "borrow" a thousand dollars to get started.
He's an expert at everything futile, worthless and unprofitable.
He talks constantly.
Oh honey, I had to write Trent a check today, he is starting a business cleaning bicycles for the Salvation Army, he's going to make it big this time! We have to dear, you worked overtime for a month and he's your brother in law. Don't you love me?