I don't know what's worse, actually shoving something up there in the first place or the fact that they then go and tell all their pals about their strange shenanigans. I mean you keep stuff like that to yourself......at least i do anyway, lol.
I can just imagine them huddling around a communal camp fire and the conversation starts....." well, I shoved so and so up my do dah last night", and his mate says, "oh that's nothing, I shoved so and so up mine, it hurt like a bugger it did". Lol. There's some peculiar folk about.