wussitis 

Being a wuss and not doing something

Dennis has wussitis and won’t go to the party.

wussitis by Helloman April 12, 2021

wussitus 

An imaginary disease in where the person afflicted is an extreme wimp.

Background: Possibly a slang term invented in a basement.

If your friend is afraid of something that isnt scary you would say:

"Dude, you have a serious case of wussitus

wussitus by N. Hicks April 14, 2005