"Here's a case where you should fold 'em:

Your "friend" has been dealing all night. He has been dealt quads three times, and has rivered a flush to beat your set on three occasions. He frequently shoots his cuffs and winks at the guy in the corner.

You're ahead now, but will definitely be beat by the river. Fold."

I was reading this in my university's library. After reading this I was laughing uncontrollably for about 10 min. Everyone was staring at me but I just could not stop laughing. Hilarious.

Do not even think about folding here. Calling virtually guarantees that at least one of them will be knocked out. Call, stand up, and say "Aces sucka faces!" Then taunt them a little more and throw the table over when you get outdrawn.