Father's occupation?

[rebbonk]

"What is your father's occupation?" asked the school secretary, filling in the forms at the start of the new year.

"He's a magician," said the small boy.

"How interesting! What's his favourite trick?"

"Sawing people in half."

"Really? Now, next question. Any brothers or sisters?"

"Yes.

Spoiler:

One half-brother and two half-sisters."