A result from eating popcorn the day before. The skin of corn kernels will not digest. When making popcorn, the kernel skin hardens and passes through the digestive track. Without thorough and proper cleaning, this can result in an unpleasant pain.
Worker #1 - Whats with Bob? He keeps picking his ass...
Worker #2 - He caught itchy asshole. I told him to stay away from all that popcorn.
An anus that has an uneasy irritating sensation
He who go to bed with itchy asshole, wake with stinky finger.
A word generally used throughout northern or central California, used to describe anything nasty, gross, stupid, lame, ugly, stinky, or negative in any way.
Man, that smells like itchy asshole!
it smelled bad
That chick looked like itchy asshole, bro.
I know man, I know...
she was ugly