"The Homework" joke

Santa Heard His Son Reciting His Homework:
"Two Plus Two, The Son Of A Bitch Is Four; Four Plus Four, The Son Of A Bitch Is Eight; Eight Plus Eight, The Son Of A Bitch...`" "Shut Up! " Shouted Furoius Santa. "Watch Your Language! You`Re Not Allowed To Use The Swearwords".

"But, Dad," Replied The Boy, "That`S What The Teacher Taught Us, And She Said To Recite It Out Loud Till We Learned It."

Next Day Santa Went Right Into The Classroom To Complain.
"Oh, Heavens! " Said The Teacher. "That`S Not What I Taught Them.

They`Re Supposed To Say,

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`Two Plus Two, The Sum Of Which Is Four.` "