A father is driving his son to his first day of school
The boy looks worried, so his dad asks him "What's wrong?"
The kid asks his father nervously, "How long do I have to go to school for?"
"Until you're 18." says the father.
The boy nods quietly. When they get to the front of the school, he asks, "Daddy, can you please give my puppy a hug for me?"
"You can hug him when you get home, son." says the father.
"Well can you please give mommy a big hug for me"
"Son," the father says abruptly, "you can hug her when you get home."
The boy's eyes get watery and he starts to sniff. So the father adds, "Don't worry so much, you'll be fine. Go on now."
The boy nods and wipes his nose. "Daddy, can I ask one more question?"
"Go on." says the dad.
The boy, now very teary-eyed, says "Daddy, you'll remember to come get me when I'm 18, won't you?"