Wiktionary
funny stuff
n. (context idiomatic English) Irregular, often illegal, activities.
Usage examples of "funny stuff".
There wasn't a whole lot of funny stuff, but it was a helluva faculty.
If he happens to catch sight of us he might try to pull some funny stuff.
Their cooking utensils are stone, a sort of funny stuff like soapstone.
I got a feeling, but there's all kinds of funny stuff coming out of you.