Jack considers telling Feliks that he is a little kid, but it's bound to discredit him and maybe even take away his chances to get better vodka.

"The... man who built the city was Russian. I guess Russian vodka was what he wanted." Jack sighs, "Everyone was psychotic, though, not just... gays." He ends up staring at his left hand while he speaks. So many powers he used to have... "We had a drug that mutated people... gave them whatever powers they wanted, but it drove them insane after a while. Cohen took a lot, I guess."

It feels more and more awkward every time he talks about Rapture. Like it's a weird nightmare he just happens to remember clearly, and his real life is up on the surface 60 years later.