Spooge that hits and hangs from your desk, after you've been masturbating at work.
Co-worker 1: Did you just see what she was wearing?
Co-worker 2 (sitting at desk): Hell yeah, now I have to check for Izzo Icicles under my desk.
The unsubtle affair. Where two people think they are being sneaky, but everyone knows what is going on.
The act of cheating out in the open, but being oblivious to it.
Joe: "Do Bill and Sue really think no one knows they are hooking up?"
Bob: "I know, right? Pretty Fat Ninja there."