Teacher: "What's the difference between 'He cleans the plate' and 'The plate is cleaned by him'?"

Student: "In first sentence he is not married, but in second sentence he is married!"

If more than one mouse is mice...

Does that mean more than one spouse is spice?

What European capital has the most ghosts?

Boo-dapest!

What did the snake say when he was offered a piece of cheese for dinner?

"Thank you, I'll just have a slither."