A rhetorical question used to indicate that someone or something shows an extraordinary amount of some negative characteristic or trait. Now the banks are talking about selling off people's mortgages to vulture funds to make a quick buck. How greedy can you be? My roommate turned off the house's hot water heater over the winter break because he thought it would save energy, but all the pipes burst and the entire house flooded. Man, how dumb can you be?

A rhetorical question used to indicate that someone or something shows an extraordinary amount of some negative characteristic or trait. Now the banks are talking about selling off people's mortgages to vulture funds to make a quick buck. How greedy can you get? My roommate turned off the house's hot water heater over the winter break because he thought it would save energy, but all the pipes burst and the entire house flooded. Man, how dumb can you get?