Not much unlike phone-sex but no one admits to masturbation while participating. They may hint it but it will USUALLY remain unknown. Silent orgasms are a requirement for CPS.
Joe: Last night me and Clair had CPS!
Joe: And I had a silent orgasm!
Joe: And she had one t-
John: How the hell would you know if she had one? It was silent. Plus, I don't give a rat's ass.
CPS as in clicks per second, all it is really is clicking as fast as possible to gain an advantage in games such as Minecraft, Idle games including (Cookie clicker, transport defender etc.) You can tend to find websites allowing you to see your scores on clicking speeds and alot of minecraft youtubers that PvP tend to think cps is key.