Food that, when consumed, results in a complete colon cleansing.

when you're hungover as shit after a spending a night drunk as a skunk

n. Bowel attack

Usually caused by a sudden shock or surprise!
Similar to a "coronary" except you shit yourself.

Some physical preconditions usually are present...
You ate a big meal earlier,

You are drinking or stoned and a little sleepy
You are not expecting a surprise.