[flashback to the gang at MacLaren's when Robin spots a woman at the bar:]
Robin: Hey, don't you know that girl over there?
Barney: No. I don't think so. No, in fact, I have definitely... [the woman bends over] Hey, it's Meg. Well, I am certainly not comparing you two in my mind right now. [pushes coaster off] Whoops. Hey, will you get that for me? [the start to fight]