Defending BB issue

[Benman]

If it's folded to the small blind, an aggressive player, who raises, how does everybody play very small pairs, 22-44 for example? My default has been to fold. If you do decide to play here, call I presume, the default line almost has to be call to the river, doesn't it? You can't be looking for trips only, otherwise the odds aren't there, but you can't just give up on the flop either, because the SB is almost always going to bet. Ideas?