The title is based on the common proverb that "Beauty is only skin deep."
Bob is dressed as President Abraham Lincoln after his assassination complete with a head wound.
Sherrie Rose, that plays 'Molly' in this episode, previously played 'Vendetta' in Season 4, Episode 3 "On a Deadman's Chest."
In the opening, the music playing in the background during the party is by progressive rock band Bigelf with their song "Change."