Deer me!!

Little Ernie is at the zoo with his teacher, Miss Goodbody, and the entire class. They are touring around when Ernie sees a deer grazing peacefully on some grass.

“Ernie, can you tell us the name of that animal?” asks Miss Goodbody, pointing to the deer.

“Well,” says Ernie, “I think it is a.... I guess it is a...”

“Let me give you a hint,” interrupts Miss Goodbody. “What does your mother call your father every morning?”

“Oh, right!” shouts Ernie. “It’s an asshole!”