Getting vomited on while performing oral sex. This Nick name is only given to those who've earned it.
I was given the best head last night until I hit her gag reflex. I can't believe she just gave me the chunker dunker
An insane person. Someone who is so mentally unstable you wouldn't be surprised if they shit in their hand and threw it at you.
Did you see that homeless guy arguing with himself? What a dookie chunker.