So the father is up the ladder sawing a branch...

So the father is up the ladder sawing a branch and the son is standing under the branch!
Father: I think you better move.
Son: what! Do you think I'm stupid?
Father: saws through the branch.
Son: d'oh!

I can not tell you the number of times I've heard the son say
"what! Do you think I'm stupid?"

Oh, by the way, YES.

Thoughts to consider (at xkcd.com)

Birth Place