Call cheap for the nuts

Its worth calling down with high(not even a pair) hands if there is a good chance, given the pot (see pot odds post), of you making a monster. The most common is a nut flush where you hold the ace (or king if the ace is on board) and often weaker players will call with ANY two suited cards in hope of a flush. If you hit your nut hand you will take all their money.

Good Luck