A sarcastic insult used by people who know they're not cool but try and shame other for not being uncool like them.
Imagine looking at Urban Dictionary. Couldn't be me.
"I just finished my chores for the day," says Bobby
"Wow, imagine being a sweat. What a try-hard," says Jimmy
"Sorry that I'm not lazy and stupid like you"
"I got 100% in all my classes"
"Imagine being a nerd"
"Imagine being so stupid you're not even smart enough to be ashamed of being stupid."