Don't fold it in cash games. But...
A couple hands into a sng yesterday I had a minraise from EP I was (EP+2) and had 1450 chips so I raised KK up to 6bb's, then the short-stack (890) went all-in, the EP minraiser went all-in (1450), so now what do I do? I folded KK! The best move, I dunno, but in this case I would have lost. So, I got to stick around and eventually came in 4th and won sweet f a.