"Squick" is a term which originated on alt.sex.bondage lo these many years ago. Something squicks you if it causes an automatic "Ick" or "Can I wash my brain out with soap please" reaction. Except that as the originator put it, there's no moral component to it.

So something that squicks you isn't necessarily *wrong*. It's just something *you* aren't going to and possibly would prefer not to know about.

Felching for example...