So I walk into the restroom to take a piss at the same time as this other guy. There are only two urinals and I don't have to go that bad. This guy makes eye contact with me and gives me a weird look and nod. It's like he wants me to piss next to him, like it's some strange invitation and I'm like "No Thanks" and decide to wait it out. I go after he's done and avoid any further advances. I think I heard him tap his feet twice while he was over there.
OP, I'm not sure if you're aware, but there is another thread in the Hangout about a guy who is describing a very similar situation to yours - only his is from the other guy's perspective. I think he might actually be the other guy you're referring to! For reference, here's the link: http://bbs.clutchfans.net/showthread.php?t=253045