Old Lady

I picked an argument that I shouldn't have picked. I was at the mall with my two-year-old and he pointed to an old lady.

Son: "What's that man doing?"
Me: "That's not a man, it is a woman"
Son: "Nooo Mom! HAHA! That's a man!"
*Old lady glares at us*
Me: "No, it is a lady. She's sitting down."
Son: "HAHAHA! Noooooo! That's a man!"