He wants to be bigger than me

Noah really wants to be bigger than me. He is obsessed with how big (tall) people are and that "someday" he'll be bigger than me. He likes to climb up on things and announce when he is bigger than me. Today he sadly said "I'm not bigger than you mom, but I want to be bigger than you" and sadly walked away :( I told him he will be when he's a teenager. He said he wants to be bigger than me NOW! I feel kind of sorry for him. He was pretty bummed about it.