I have nothing against language, but this joke is a lot less funny due to the word "fuckin'." It just seems so out of place.
It doesn't really seem necessary , a bit gratuitous - but it's hard to edit a cartoon.
Still? Did I miss an evolutionary leap? Shit, not again!
Just to be clear, did you mean morels or shiitakes?
I actually hate mushrooms. Real mushrooms. ;)