This will go against some popular advice above (and I happen to agree with them, in CERTAIN situations) but there are other times when you get super-fishy tables when you know there almost certainly will be LOTS of callers behind you -- in which case, X players might warrant the call (where X is the number of callers you can expect). However, if on another table, where you expect everyone will fold -- and you have that good a read on him -- why play heads-up when you are quite certain (in this example) to be the proverbial dog?
In short: more information on the table is needed as "average" might lead to a belief to fold -- but some "average" tables might warrant the call...
More often than not, though, like they say -- fold and don't get yourself in with a guy who invariably has, at least now, a better hand than you.
Barron Vangor Toth
www.BarronVangorToth.com
"Life Goes Against Conventional Wisdom"