karate chris likt aan een grumpleforskine
"Karate Chris licks a grumpleforskine" doesn't make sense as "grumpleforskine" is a nonsensical term. Substituting it with a specific item appropriate in a karate context we get:
"Karate practitioner Chris licks a sweat-soaked white belt."
This description should be specific enough for an AI picture generator. It specifies a man named Chris who practices karate, and he is engaged in the unusual act of licking a sweaty white karate belt.