The Impulse

A man and a woman are at a grocery store.
M: Where is the milk?
W: I don't know lets ask that guy.
M: Do you know where the milk is? 
RP: Uh it is towards the back of the store by the deli.

M: Thank you.

RP: Your welcome.

M: Alright I will push the cart.

W: But I want to push the cart.

M: Well I'm pushing it so your going to have to accept that.

W: No I won't! I'll fight you for it.

M: How?

W: Lets play rock paper scissors to decide who gets to push the cart.

M&W: Rock. Paper. Scissors.

M: Rock.

W: Paper. I win.