Not really a rude tell as such, but one of my few negative experiences in COH, on Virtue. I can't remember the guys name, but I wish I could.
I was on a reasonably lowbie alt. Somewhere in the mid-teens, probably. I got a tell from a guy wanting to know if I wanted to run missions on PI. I said that I was only a level whatever I was and wasn't sure how much help he could be, but I was on my own and bored, so if they had room, that'd be awesome.
So he put together a full team and I made the trek to PI. We ran a couple of missions, was pretty fun. I was holding my own more-or-less ok, bit of banter and chat. All nice enough, when the guy sends me a tell, asking if I want to join his SG.
I said it was kind of him, but I was an RPer and the toon was already promised to another group, one her 'brother' was in, and I was just waiting for one of the officers to be on the same time I was, for an SG invite.
He asked if I'd reconsider.
I said no, but thank you all the same.
He said that was a shame, and promptly kicked me out of the team, onto a map that was suddenly full of mobs 30-ish levels higher than me, and stomped me good.
I think that given that I can probably count the number of negative encounters I have on one hand (and many of them were RP drama based) that's not bad going, really for a game I played for 7 1/2 years.