Taste Test

A teacher was having a tasting day where she would put candy in the kids mouth and they would guess what it was. She went to the first little boy and put Hershey's kiss in his mouth. "Can you guess what it us?"
"I don't know," said the boy.
"I'll give you a hint. It's something your daddy asks your mommy for every morning."
The girl next to boys says "Don't eat it. Its a piece of ***."