"Little Deeper" joke

There once was a little boy named Little Deeper. He was in the 3rd grade and his dad was the principal of his school. One day, he used this to the best of his advantage,...on his teacher.
He walked up to her desk, told her to take her clothes off.She said "
no"
.He said, "
if you don't, I'll tell my dad & he'll fire you"
, so she did.
Next, he walked up to her and told her to get on the desk and dance. She rejected again. He threatened her once again, and she did it.
One last time, he walked up to her desk, told her to f**k him. She screamed "
NO"
. Again, he threatened her again. So,...she gave in and did him.
Right as they started, his dad, the principal, walked in.He started screaming "
LITTLE DEEPER"
, "
LITTLE DEEPER"
, LITTLE DEEPER!!"
His son replied,"
Dad, if I go any deeper, I'll get STUCK!!!"