Teen angst

I pick up my teenage daughter from the bus stop every day after school. Each week the boys get a little fresher as their mouths are embracing springtime, either that or they've lost their minds.
Today, as I pull away, one of the boys says, "Hi future mother-in-law", and I roll down my window to respond, "I'm sure your parents don't appreciate the dope smoking, so bring it down a level boys". To this my daughter and her cute little friend whispered and giggled for a second before they became horrified at what I had done.
It has been brought to my attention that I frightened the young men. It was only funny on their side. My humor is, in fact, not funny at all.
I am mean.
To this I responded, "I'm not mean, I'm funny...just like them. They can't take a joke? Why is my comment mean, when their's was deemed humorous?" I was confused for a moment.
Then I was informed I had embarrassed my daughter, and probably her friend.
"Why did I have to say anything at all - they were just joking". Well, so was I. My jokes aren't funny?

I thought some more, then realized what a wonderful move I had made.
Teen boys need to be afraid...very afraid. Don't bring your game this way.

And I thought I was being funny.