So, have you been officially labeled a troll yet or what?
I mean, there's the possibility that you're such a social retard that you've never seen/heard anyone introduced as "my friend" before. But the possibility is so mind-blowingly small, that I gotta believe you're just a bored kid trolling.
Look, a girl might have f**ked me last night. She'll still introduce me as "her friend" to other people. Because what else is she gonna say? It's how people talk. "Here's my friend Mikey." "This is my friend Kate."
There goes my troll feeding for the day. That should hold you over...