Guy 2: Yeah, he's doing an Adam.
Guy 1: ...
A topless shit is only "an Adam" if you took your clothes off before going for a shit. If you were already topless beforehand, it does not count. You must also be fully topless: no vests or bras.
Doing a naked shit is sometimes called a "full Adam", although a topless shit is never called a "half Adam".
The main advantage of doing an Adam is that when you are straining on the toilet, your shirt will not get sweaty from your exertions.
Matt: Oh, I left it in the toilet.
Joe: Why did you take it off?
Matt: I was doing an Adam.
Joe: Ah, of course.
2) Cool, can I have a look at your bank statement?
1) No ... I folded it into a paper aeroplane and it flew to africa and now I don't know where it is
2) Dude, you're doing an adam