Folding in SB (auto-win for BB)

[fatduck]

I'm strugging with short-handed play (3 or 4-handed in 1-table SnGs) and one thing I notice I have trouble with is playing from the small blind with garbage/marginal hands when folded to. Is it worth it just to give away your SB to the BB sometimes? It always feels like I'm showing extreme weakness by just calling. Should I be raising with just about anything here for folding equity? I know when I'm in this position as BB I often laugh when I get a free win with trash, but it's a pain in the ass when I get a freebie with KK or something.

Thoughts?