This is what Marshall and Barney look like as they pretend to be Holli and text Ted as they're wearing cheer leading outfits and reading architecture magazines.
Barney manages to scare of Lily for the next four weeks when he tells the peanut butter versus jam joke. While we never get to hear the punchline we do get to hear a funny way to hide Alyson Hannigan's maternity leave.
Barney: Lesson one, lose the goatee, it doesn't go with your suit. Ted: I'm not wearing a suit. Barney: Lesson two, get a suit. Suits are cool, exhibit A. [points to his own suit] Lesson three, don't even think about getting married til you're thirty.