Clarify this term for me please

[afk]

Also, on the forums it occurs often when someone makes the final table of a tourny. If you check the tourny forums sometimes they'll be a post for some sweat, it's just a harmless "hey check it out I made a final table, come watch me play" thing. It's actually pretty cool, I've seen a few 2+2ers win some nice cash by sweating them at a final table.