There was this little boy and he was sitting in his kindergarten classroom with his classmates and his teacher. Suddenly, while the teacher was trying to teach the kids why 2+2=4, when the little boy bounced up from his chair.

He said, "Teacher, teacher! I have to go to the bathroom!"

The teacher said, "Well, first you must repeat your Alphabet, and then you can go to the bathroom."

So, the boy said his alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZ
and so he got to go the bathroom.

Then, about an hour later, when the boy was back in class, doing his math problems, he suddenly bounced from his chair again. He said, "Teacher, teacher! I have to go to the bathroom right away!"

So, again the teacher said, "Well, first you must say your Alphabet and then you can go to the bathroom."

Obeying the teacher, the little boy said his Alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZ, so he got to go to the bathroom.

A couple of hours later, when the boy was back in class, he had to go to the bathroom again, but this time, trying not to annoy the teacher, he held it in for about half an hour. Then, when he just could not hold it any longer, he jumped from his chair and yelled out, "Teacher, teacher! I have to go to the bathroom really really badly!"

Again, his teacher said to say his Alphabet before he went to the bathroom.

So, he said, "ABCDEFGHIJKLMNOQRSTUVWXYZ."

Then, his teacher asked him, "Why didn't you say the P?"

So, in response, the boy said, "I couldn't. It was gone. The P already went down my pants."