Bus boys.

I woke up in the middle of the night last night to Alex laughing his head off in his sleep. He was laughing so hard, he could barely breathe.

I asked him what was so funny, and he responded saying "I was watching South Park, and there were bus boys going around to tables asking for tips! Bus boys don't get tips!"

I started laughing until I fell asleep until morning.

The funny things he will do and say in his sleep, it keeps me entertained.