i sometimes do it with a made hand to invite a re-raise.

player who thinks he's good behind me thinks, what a fish, throws in a pot-sized re-raise with TPTK or similar, then i stick all my money in.

he usually calls as he's pretty sure i don't know what i'm doing.

then i take abuse for the next half-hour or so.

don't think this would work against really good players, but its very effective at $10 NL.