If all players other than the big blind and small_blind have folded, then the two players may agree to "chop" the pot, meaning they each take back their posted blind.
A chop is also at the end of a hand when two players tie for the best five card hand, and the pot is split equally (or close to equally) between them.
Example...
It's not worth player if there's only one other person still in the hand, so let's chop it.
I can't believe we both had pocket kings and chopped the pot.