Endless Jokes

Which color is a zebra's base color? The debate is endless, and there is no clear answer.
It both is and isn't a black-and-white issue.
If there’s an invasion army of endless flies attacking, who you gonna call?
The fly S.W.A.T. Team!
I was going to become a biologist. But all the endless coursework on hearts and lungs and kidneys and so on just made it seem like one long organ recital.