crack fever 

When you used to be sociable and then you started using crack (meth) and became anti social due to your drug use. You got the crack fever.
Also if you're a crack user and you make plans to go and do something social (meaning outside of your room or home) and then you flake out, you got the crack fever.

John: hey bro what's doin? Keen to go to the pub for a couple beers?

Larry: yeah bro when do you want to go?

John: I'll be at yours in an hour.

John arrives at Larry's

John: oi bro stop smashing the pipe, let's go down the pub

Larry: nah bro nah, I'm just gonna chill here ay.

John: fuck bro you got the crack fever

crack fever by Modest Molly October 24, 2017

Ass Crack Fever 

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.

Ass Crack Fever by Dick Onchin August 26, 2020

ass crack fever 

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.

ass crack fever by ceav March 3, 2017