True Story

So I go in for a flu shot. I sit down and present my arm to the nurse.

The nurse says, "Are you sure you want to get a shot in your mouse arm?"

I think to myself, "That's insulting. Is my arm that small and skinny that she has to compare me to a mouse?"

I say, "Yes, I'm sure." She shrugs, gives me the shot, puts on the Bandaid, and I head back to my office.

I sit down at my computer and reach for my mouse.

OUCH!

Oh, now I get it. Mouse arm.