Quote from Barney in The Scorpion and the Toad
Future Ted: [v.o.] Marshall and Lily had been together for nine wonderful years until she dumped him and ran off to San Francisco. The healing process was taking a long time. Then, one night he made a giant leap forward. Robin: Alright, see you guys later. Ted: I'll walk you out. Marshall: See ya. Barney: You just checked out Robin's ass. Marshall: What? No. I... Barney, I was... Barney: Dude, that's awesome! You're finally forgetting about that short redhead. Marshall: Lily. Barney: Yes, Lily, thank you. That was gonna drive me crazy all night.