The Front Porch

Robin returns home to learn that her friends missed her event-filled broadcast due to the argument, involving her giving a heartfelt tribute to her friends, dousing her co-anchor with a fire extinguisher after he catches fire, administering CPR to her co-anchor after he collapses, and helping a guest give birth live on-air.

Ted heads into the bar the next day to find Karen waiting, having had the situation explained to her by Lily.

Ted breaks up with Karen after she says he cannot see someone as manipulative as Lily again and he does the "Front Porch Test" himself, imagining what the future would be like without her and Marshall.

Barney insists his clothing choice is superior, citing the possibility of attractive women coming to his home at night and seeing how good he looks, but then admits how unlikely that is and uncomfortable the "suitjamas" are.

A week later, an attractive woman shows up at his apartment at night but, upon seeing his nightshirt, she decides to leave, much to Barney's chagrin.

Lily's militaristic speech about secretly breaking Ted up with past girlfriends for his own good, while Ted demands to know if Lily was responsible for him and Robin breaking up, is reminiscent of Jack Nicholson and Tom Cruise's explosive exchange in the climax of A Few Good Men.