A boner maybe?
Based on your tag I figure it's related to gooning and boners probably fall into those categories mentioned.
Speaking of which, I got reminded of this:
This was actually a thing in Batman #66 lmfao. Apparently the word meant "silly mistake" back in 1951.
The best part is that one of the cover artists of this was literally named, and I kid you not,
Dick Sprang.