Skin color.
A finite number! One member to perform the task, and the rest to behave in a manner stereotypical to the ethnicity in question.
Put-in. (In a Russian accent)
My husband doesn't go to the circus
One is fun to hit with a sledgehammer, the other one is a watermelon.
I'd tell you happy birthday, but to me, you've been dead for centuries
I'll show myself out.
In a blow up pool
Because they are full of ISIS seamen.
Polar bears gather around the ice hole.
Excuse me " "Is your person white " "I don't see skin color I just see people"