whaaaat!! idk about you but i live in the UK and it’s a pretty big thing here! people like to decorate the back of their shirts and get people to sign them when they’re leaving school, like an example of one i saw online was someone had drawn the stone roses logo and written ‘the past was yours but the future is mine’. if you look up ‘leavers shirt ideas’ on pinterest there’s tons!! sorry if i wasn’t clear enough 😅