Is it ghey that I rode on a motorcycle with my friend (guy) every day after class from Throckmorton to our house? 
I hate to tell you this, but yeah, that's ghey too. There are some things that violate the straight guy code, so far we have covered sharing umbrellas and sharing rides on a motorcycle. I would also add sitting right next to a guy at a movie theater. There has to be a 1 seat buffer zone in order to avoid being ghey.
IMO, of course.
Dont forget the whole urinal rule, its very similar to the movie seat buffer. In case your wondering I'll give some cliff notes on it
When walking into a men's room and the row of urinals is completely vacant, you are to proceed to the farthest urinal from the door.
Do not use the one that is low set (leave this one for little boys) unless God has been as good to you as he has been to me and you need the extra clearance
When a row of urinals is occupied by one person...do not...I repeat do NOT take a urinal to either side of that individual when it is physically possible to take a different one
When multiple men are at urinals you should split the difference taking one in the middle being equidistant from those immediately adjacent to you
Do not take a standup piss using a toilet in a stall if urinals are available. If you're enough of a girl to need a whole toilet in a public restroom then by all means, sit the hell down and close the door.