Farting while bare-assed. Especially if doing so point blanc onto someone's head.
Anne wants me to fudgehorn her if she oversleeps.
A FudgeHorn is also a wet or chunky sounding flatulence, the sound of which would indicate the presence of solids or liquids, or may inspire suspicions of disease.
Following a truly wet and greasy sounding expulsion of anal gas and debris Timothy Exclaimed, "FudgeHorn!"
See also "...and so the universe began."