Ted's hilarious attempts to define himself as a Professor carry this episode as Lily forces Barney and Robin to admit they're a couple. Also, Brad's biceps and abs.
Lily and the gang confront Ted about bringing new relationships into their biggest celebrations with hilarious flashbacks. Barney has a magical relationship with cameras.
Lily and Marshall decide they want to keep the Long Island home and move in, Robin decides to #Resist. Barney and Ted contemplate starting a family together.
In a clever ruse, Barney and Quinn set up the gang to believe they've ruined their relationship. Robin and Ted squable over Quinns apartment and Marshall retells ill advised sex stories about him and Lily.