Piece, Peace Out

Me: (Writing on the board) What is the meaning of this word? P E A C E
Students: That means, like, world peace. Or like, no war.
Me: Absolutely!  Now, how about P I E C E?
Students: That one's like a piece of pie, or a piece of pizza.
Me: Yes!
Student: How do you spell it if your mom calls your dad a PIECE of work??!