Stud8 - play (A8)5 in this spot?

[AlanBostick]

Sure the eight in your hand sucks; but you really don't know whether the bring-in's hand has actually improved, or if she caught a sucker pair of deuces, or started out with a pair, etc.

You may be behind for low. You may also be ahead for low. And if you aren't ahead, the bet can still set up a play on a later street if the villains catch bad cards.