The one or two people who insist on going up a stairway or down a stairway (usually after a train arrives at a subway stop) while all the people leaving the train are going in the opposite direction.
"Of course there were subway salmon when I was late for work and I was trying to get out of the subway in a hurry ... Dude, couldn't they tell the train already left?"
Selecting or clicking the "reload" option of a web browser to check to see if anyone has commented on your Facebook post.
Dude (thinking to himself) - "Wait till all my friends see what I just posted - I am f*@king hilarious..Dammit, still nothing...better meload the page."
Using a location based check in app such as Foursquare after the fact. For example - checking into a bar the day after you were actually there to get points.
"WTF - I saw Joel check in to Lucky's bar at 8 this morning! Nah dude, we were there last night - I think he was reactivating for a badge."
Someone who takes an inordinate amount of time inside a bathroom stall. It is unclear if they are reading, sleeping, or using it for its intended purpose. Especially annoying during the busiest times, aka "flush hour".
My coffee kicked in so I went into the mens room ... not only was it flush hour, but there was a staller...I didn't think I was going to make it dude!
The likelihood that when you select a locker (usually at gym) that someone will need to access the locker above, next to, or under the one you are using.
Gym Rat One: "Are you waiting for something?"
Gym Rat Two: "Yeah, my locker is below yours."
Gym Rat One: "What are the odds of that considering there are probably 100 in this locker room?"
Gym Rat One: "It's called Murphy's locker. Good workout?"
Gay Male Syndrome - the phenomenon where straight male or female exhibits behaviors that are normally seen in gay men. For example, offering design advice, desire for multiple sex partners (preferably in police or firefighter uniforms), and obsessing about going to the gym.
My friend Stacy was telling me that she stopped eating, doesn't want children, decided vodka tastes delicious and wants to screw an anonymous 25 year old. I said "Girl, sounds like you have GMS!"