Lily and Ted are carrying out their respective matron of honor and best man duties. Lily seems to be lax on carrying out her duties by forgetting to hit the send button on Robin's bridal shower evite. But Lily admits that the shower was a bit of a bust for another reason. Lily and Robin try to overcome that problem. On the other hand, Ted is doing whatever he can to be the best best man ever by accommodating Barney's every whim. But there is one thing that Ted may not be able to do for Barney, and that is not to have held Robin's hand at the carousel in the park, which Barney saw. Marshall the lawyer, who, although still on the road with Daphne, is present with the gang in a half stuffed man/half electronic state, ends up being the judge on the Barney/Ted issue.