It seems all of my funniest moments happen when TOZ runs games.
BBEG summons a bunch of monsters to surround him. We had a split party, so naturally we cast Create Pit. BBEG falls in, then starts slithering up the wall and out of the pit while our vow-of-silence monk starts bull rushing monsters into the pit. Cast Grease on the wall 20-feet above the pit, BBEG fails his reflex save and goes right back into the pit. The battle resulted with a dog-pile on the boss that lasted several rounds, a pit claiming the lives of at least 2 zombies, a monk bull rushing himself into the pit, and an eidolon braving the 20-foot drop to help the monk.
One of the craziest fights I've been in.