Riddle

You know, Tom, Dick and Harry? I wonder if anyone gives their son that name (the middle one) anymore. 

In that vein...

So there's this mum who names her child (that middle thing). So then she sends her child to school. He's embarrassed with his name, so every time someone asks him what his name is, he says, "Eh-Hen".

Every day, when she comes to pick up the kid, she sees him playing in the playground with the other children, and she goes, "Hey, (you know, the middle one), come on, let's go!" 

And all the children in the playground would be like, "Wow, such a seriously cool mum to give her son such a dawg of a nickname!"

So then one day they asked her, "So why do you call him a (you know), anyway?"

So the question is, when they found out that his name was (you better know by now), who was more embarrassed: the boy, the mum, or the kids from the playground?