Catching a nasty STD from anal sex. Usually from a filthy whore or or prostitute.
What is it doc? I feel horrible and I think my cock is going to rot off.

Have you had anal?
Yes.

Was he or she clean?
No. She was a street walker and gave it up for $5 so I had to clap them cheeks. Wouldn’t you?
Ummmm. No. That’s nasty. You have the ass crack fever. Here is a script now go soak your penis in bleach.
by Dick Onchin August 26, 2020
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When you don't wipe well after a poo, and you get the itchies.
Heather didn't wipe well enough, leaving her with ass crack fever.
by ceav March 3, 2017
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