Amanda, who doesn't know Robin from Lily, is totally lost playing the Lily-centric games Marshall has created (Lily-al Pursuit [Lily trivia] and Gilding the Lily [Lily tributes]). Why they didn't just let Amanda team with Ted makes no sense to me, but no biggie. Eventually she excuses herself and returns to the kitchen to continue working on Lily's cake. Who makes a cake at the birthday party, you ask? TV people do. It's just like cutting down and then decorating the tree on Christmas Eve, or starting a 22lb turkey Thanksgiving afternoon.
As soon as she's out of sight, Lily hustles to get her real friends into an Amanda-less group picture. When Ted realizes Lily is purposefully excluding Amanda, he asks her about it. She tries to bluff with more camera words, but finally says, "I'm not going to let another one of your dumb skanks ruin my precious memories." She shoves him into the photo pose, the camera clicks and everyone looks horrible. Except Barney. Commercial.
Lily breaks out her photo album, for "a little walk down random skank lane," to prove to Ted he doesn't even remember many of the She-Might-Be-The-One girls he's dragged to their friends-only shindigs over the years. She starts a new trivia birthday party game: Name That Bitch. First, there is the one from Christmas, four years ago. Ted thinks her name might be Sandra or Sarah, but Lily points out that he's only guessing those because they sound like Santa, and this is a Christmas photo. The woman's name is actually Leilani. On New Year's Eve, 2007, there was She's-The-One Emily. At Robin's Uncle Cecil's funeral (who takes pictures of themselves mourning at a funeral?): This-Just-Proves-You-Find-The-One When-You're-Not-Looking Isabel. Lily turns to the next photo. "My appendix surgery: Robin, Marshall, Barney, Lily, Ted, and...well, this one you admitted you were just trying to bang." We cut from the picture to Lily and Ted sitting on the DOWISETREPLA couch. Lily holds up her fist. "Respect." Ted bumps it. And hey, wait a minute -- the She-Might-Be-The-Ones are skanks, but Ted gets Lily's "respect" for bringing a girl he's trying to bang to visit a post-surgical Lily in the hospital? The logic fairy must get Lily's birthday off. I hear it's a national holiday.