Farting. I decided not long into our relationship that i could either hold it in until later, and get stomach ache (or trump on the way out of the door hence making leaving the room pointless!) or i could be brave and just let it out. So i did. And that means i can now too. He just stuffs his nose in his t-shirt collar and pulls a funny face. He's seen the pain i get in from holding it in and he loves me so would rather i didn't put myself through that!
Plus we just have a giggle about the massive amounts I'm doing, it's unreal.