Hands

Mom: Don't your hands hurt from lifting all that wood yesterday?

Brother 2: Nope. I've been working them out with that squeezing thingy.

Me: Why do you want strong hands?

Brother 2: So I can grab onto people's arms and not let go. Imagine... I grab Brother 1 by the arm, and hold him in place with my super strong hands.

Mom: Until Brother 1 falls on top of you and ruins everything.