What do you fantasize about doing but wouldn´t do irl?

I wonder what you guys would really like to try or what you fantasised about but never did and for what reason.

I´ll go first. I always fantasise about getting my nipples pierced either as part of play or with actual jewellery. BUT I never did it and I probably never will do it because I fear that it may hurt too much or get infected. I would need someone experienced going to a piercer isn´t really doing it for me, because I think it would have to be in a setting where I a aroused a bit at least, to maybe be fun for me. But I believe it will stay a fantasy for ever.

How about you? Whats your biggest fantasy but you are reluctant to make it become reality?

(Sorry if this was already a topic :/...)

One fantasy I have never had the courage to realise is that of switching to the role of patient and putting myself in the hands of a doctor who knows what is good for me. I'd like to be carefully examined and undergo all the necessary therapies. Above all, I would like to experience the sensation of receiving an enema from a girl. I don't know why I haven't done it yet, but probably because of the embarrassment and the fact that you have to find a person you can really trust. Another big fantasy never realized is to prescribe my patient to clean her colon with an oral laxative.

We came close to getting tattoos on our butt cheeks or back of our shoulders back in the 80's - but we chickened out. Not sure it was a fantasy, just something we seriously talked about.

As far as a fantasy - I'd like to spend an afternoon with four or five bi-sexual younger (30-40's) ladies who are into everything and anything. Enemas, strap-ons, spankings, BDSM etc. Lots of expermimentaion. I can fantasize about it - but would never do it. Not sure my wife would go for it or be happy with me if I did it either!! (But I might tell her it is a fantasy)

One thing would be hiring a prostitute. I'd see them on the street and be somewhat intrigued, but fear of disease, or being robbed, or worse, the legal questions and not knowing how to negotiate etc. kept me away. I think the fantasy is different than the reality would be.

I haven’t experienced a threesome since my college days but I would love a threesome with two MILFs or two mature ladies. I want them to be into medical fetishes, enemas and anal sex. It would be great if they were nurses.