I'm not sure if this qualifies, but the story is epic and I'm a terrible braggart.
I have this bad (but hilarious) habit of pretending to be someone else when people call me as a result of dialing the wrong number (except those times when people call asking if this is the police station; they weren't joking either).
A guy called me asking for a Jonathan. Being the ass that I am, I pretend to be him. The guy then says "So, yeah, I got the cool lube that you showed me last week. Want to come over tonight and give it a try?" At this point I decided that stopping was a good idea, so I let him know that he called the wrong number. Being a cool guy, he found it just as funny as I did (he was initially pissed, but got around that pretty quickly), and we had a good laugh about it.
That's how I made my first gay friend.