You and your friend are walking on the sidewalk, and suddenly your friend pushes you into the man in front of you

"Oops, sorry, I didn't mean to!" your friend says

The man turns around "Watch your step, kid!" the man says, looking at you

"Sorry! Wait....kid?! I'm 18!" you say

"But you look like a middle schooler, so short!" he says, grinning at you