Because it will go right over his head
Namaste (better to say it aloud)
Because they make up everything!
A: Miscarriage This joke never gets old, just like the baby.
In-ya-window
Because he bumped his head on the low-way! I guess we're doing 4 year old's jokes today :)
Harry: Help! What is it Fred: Your head!
Because they can't reach the high notes. Bonus: how does dwarves communicate? Smalltalk.
Little.