Slang for "You’re very slow”. Not the brightest person, this person doesn’t have to be physically old.
Me:so ya jeff ran to school today
Friend: NO WAY
Friend 2: wait who?
Me: ya he was late
Friend: Poor dude, his house is far from school
Friend 2: WHO.????
Me: JEFF. Keep up grandma
Friend: NO WAY
Friend 2: wait who?
Me: ya he was late
Friend: Poor dude, his house is far from school
Friend 2: WHO.????
Me: JEFF. Keep up grandma
by The True Oracle November 5, 2017