hahaha, my son is not here and I cannot quote you a paradiddle. so many things yet to learn ...
Tap the famous "indian beat" (You know the one the indians use when their about to go to war in all those Western/Cowboy movies.) with your hand on something...
Da dum dum dum.
You'll be able to impress all your other mother freinds with this knowledge and probably your son!