The urinal you leave open between yourself and another dude when pissing in a bathroom. A violation of this rule, when there are plenty of urinals, shows that you are gay.
I guess that dude isn't gay, he left the "i'm not gay" urinalopen.
A phenomenon started by a user on mylifeisaverage.com in which a person texts "i love you" to random phone numbers, or numbers other users post in comments on MLIA.
Guy 1: What are you doing?
Guy 2: I'm sending i love you texts. One of the people even knew what it was. Now she's saved as The Joker on my phone, and I'm Batman on hers.