Pfft.
Lots of people that don't like the idea of a cock in their ass aren't automatically gay and Nico is one of them. I had a rigid sigmoidoscopy done in my 20's and I still have scars from that nurse INSERTING that Louisville Slugger INTO ME while the interest was saying, "Okay Jessica, you may insert further" with me on the table in a gown and in the classic horsey position. In a gown.
I think the psychology here is that my friend Nicodemus has not yet gone through what I have, and he's imagining what it would it be like sexually, and it doesn't sound like his cup of tea. I get that.
What I would like to propose, is that Nicodemus, a very cool guy, and one approaching middle age, is going to embrace the fact that blood tests aren't complete yet, and he's going to have to horsey it up, arch his back, and take it, and none of it is sexual. We're making sure cancer doesn't have a hold on you.
Finally Nicodemus, my friend, is that maybe you should make friends with Sift-- probably the first gender fluid person that played tribes. Rug munchers aren't my deal, but I have friends that do. Men that take it in the ass and give blowjobs are not my jam at all, but I'm friends with men that do one, the other, and both.
You're not a dumb man. Sehvi worries about you, but I don't. You're smart enough to figure yourself out without the Hannibal Lecter I just gave.