Such perfect timing. Your question allows me to point everyone to MEL magazine a second time this week for an article on just such goings-on:
The results of what is now called 'Buddy Bating' is not weird at all. In fact, more and more straight men are finding the same results. A shared activity and personalities that mesh bring us closer to others. it's how we form friendships and close bonds. Straight guys admit to feeling a closer bond to buddies they've masturbated with. Honesty and openness about erections and masturbation allows guys to become...well, more open and honest with one another about all manner of things.
There's nothing weird about enjoying yourselves in a shared interest.