I used to play an MMO and ran with a dude named "Yourexwife" sometimes. The name alone I found funny but what worked best was when I talked about him.
Friend: "Where did you get that armor?"
Me: "I got it from Yourexwife for pretty cheap."
Friend: "When did you find that out?"
Me: "Yourexwife told me the other day."
Friend: "Dude, what took you so long?"
Me: "I was talking to Yourexwife in town."
It ALWAYS works. It was great. I still laugh sometimes. The only time it didn't work is when I refered to Yourexwife as "he". I have wanted to recycle the name in a few games but can't seem to do it out of respect for his originality. Props and all that.