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2.
something that is both fun but rather disgusting
Yo that was so fungusting.

That guy is fun but disgusting. You could say he is fungusting!
by Sprantastic June 09, 2008
 
1.
an event that is funny and entertaining but leaves you utterly disgusted.
laughing at the intimacy lubracants at Walgreens was fungusting.
by a hiz April 24, 2007
 
3.
Something that is "fungusting" can be defined as something disgustingly fun, such as the following: Mud-wrestling, egging, digging up a hole to bury a body.
I was stabbing fungus to death earlier, it was pretty fungusting...Hail Satan
by Dr. Tran. September 01, 2014