A sunshit is basically an addison fanpage that nobody accepts into the fandom. I can only think of one at the moment and that is none other than moistaddison! Actually she is probably the only sunshit.
by Letsgotomato September 01, 2021
Sunshit is a nickname or insult to call someone who is overly happy way too much to the point of annoyance. Usually the person being optimistic
by Just some undertale fan July 25, 2021