Dumbass Nostalgia
Just like normal nostalgia, but when you remember a time when you were a dumbass instead.
Jake: "Dude I just remembered that time in 7th grade I dated Meghan."
Will: "Ew that ugly bitch?"
Will: "That's some serious dumbass nostalgia, Jake."
Will: "Ew that ugly bitch?"
Will: "That's some serious dumbass nostalgia, Jake."