It's not to bad mate, I had the camera down the throat a few yews ago, they sprayed some banana smelling stuff in the back of my mouth, told me to bite on a blue plastic donut & shoved the camera through that.
I did get told off for retching too much but there wasn't a lot I could do about that, I did try & tell the bloke this but with a mouthful of donut & the back of me throat numb with banana spray the words just never made their way out, I just ended up retching a few times more & got told off again, still there are worse places to have a camera shoved :oldman: