You usually perform an NRC when youre talking to a girl on Facebook or texting someone
The science behind an NRC is, that after beating off you have a lower sex drive, meaning that if you still want to do it, she's really worth it.
Luke: Oh yeah?
Nick: Yeah she wants my dick.
Luke: Are you gonna let her get it?
Nick: Well I was, but then I NRC'd that ho and decided otherwise.
Luke: I see I see. I just did an NRC the other night.
Nick: Natural Reality Checks are the bomb