I should imagine if you have Crohn's you won't be receiving, although I guess it also depends on exactly where you have it?
Are you on steroids currently Jonny?
In all honesty, never tried being on the receiving end, so I'm not sure. Never really been to keen on the idea either, Sofia is the only TS I ever put on my hot list, purely for her looks rather than her being a TS.
I'm not on steroids but I do have to take immunosuppressive medication, hence the need to shield.