A
sudden attack is a sudden, unexpected, unstoppable need to take a massive dump. Most often occurs in those with
Irritable Bowel Syndrome or those who just consumed a large amount of fast food. 95% of the time, a sudden attack doesn't leave you enough time to walk to the nearest crapper forcing you to sprint like a madman which only makes it harder to hold it in. As such, you're forced to clench your
asscheeks together as hard as you can resulting in a very awkward looking running posture that is certain to catch the attention and imagination of all nearby.
"That six-pack and a pound sure hit the spot...OH SHIT,
SUDDEN ATTACK!"
Bob: Whoa, that guy's running like he just
took it in the ass.
John: Probably a
sudden attack.
Bob: Are we there yet? I gotta take a dump soon.
John: I think that there's a gas station about ten minutes down...
Bob: OH SHIT, SUDDEN ATTACK, FUCKING FLOOR IT!
John: Goddammit...