What goes up but never goes down?
My grades.
(I wish)
What goes up but never goes down?
My grades.
(I wish)
Alright listen up, buttercup. The joke is that grades are supposed to go up over time, but this person's grades only go down. It's self-deprecating 'cause they're making fun of their own bad grades. I bet you have bad grades too, you loser.