Size, it's a matter of opinion

Today, D came home from school and told me: Mum! We changed our sitting places in class.

Me: Oh! Where are you seated now?

D: I am seated in the middle of the class, but still in the front row.

Me: who are you sitting with?

D: I have a tiny little boy next to me.

Me: What is his name? And how small is he?

D: His name is Xxx. And he is slightly taller than me.

Me: He is taller than you and you call him tiny? 

D: Heehee! He is still tiny!