IHADUMA
Acronym for "I Have a Dildo Up Me Arse", a term relating to a person with an extremely strange walk and sits down very gingerly so much so that it appears they have some sort of large sex aid inserted into their anus and it is causing extreme discomfort
Cor look at jason over there, never seen anyone walking and sitting down like that, looks like he's got a 12 incher up his arse, he's IHADUMA, it's gonna be the end of him if he doesn't remove it