When you write skits for Saturday Night Live, you spend your days doing two things. Praying that nobody ever sends Kristen Wiig a pilot script she likes and devising sketches that are logistically required to go at least two minutes too long. You have to let the first thing go. As for the second, sometimes, you can write a sketch about a show that's better than yours.
When the sketch is built around affected or willful ignorance, you always have to remember these three things.
First: Bring your C game. Witty and incisive humor is not always a plus, especially when the skit is filler, dependent on repetition and on broad physical gestures delivered by your least physical cast members. Just write anything, and draw it out. Then draw it out again.
Second: Ignore your core audience. Your advertisers know your show attracts middle class people with disposable income and an interest in pop culture and current events. You know these people fast forward the DVR to the News segment on Sunday afternoon, hoping for a surprise drop in by Amy or Tina. The only people watching live are drunk college boys who would love to see a lot of Gabrielle Anwar. Don't pander. Remember, you went to Yale.
Third: Build the finish around the asinine guest host. When you've set up the situation so that the host's eye line to the cue cards isn't painfully obvious, you've already won half the battle. Now capitalize on that by giving the energy of a scene about relative levels of fame to a guy who's basically a frat boy without portfolio. Because the object of the game is to be smart and funny. And nothing shows how smart and funny you are like using a show featuring this guy...
to crack wise about a show that features this guy.