I agree with Amel. When he says "this guy", he means someone else. It is the following use of "this":
"this
9.
spoken used in a story or a joke when you mention a person or thing without giving a name
There was this big guy standing in the doorway."
http://www.macmillandictionary.com/dictionary/american/this#...Note that he stresses "guy": that is how you can tell he doesn't mean "me", "myself"; if he had meant that, he would have stressed "this". He's not saying "
this guy", meaning this one as opposed to another one (i.e., this one here, myself); he's saying "this
guy", another guy whose name he doesn't give.