A photograph indicates that Mercer (Ryan Devlin) and Moe (Andrew McClain) were past participants in the guard-prisoner sociology experiment like the one presented in episode 3.2, My Big Fat Greek Rush Week (2006).
On the coaster given to see if drinks have been drugged, you can see the logo CW. The CW is the network of Veronica Mars.
The title of the episode refers to what is splattered all over Dean O'Dell's (Ed Begley Jr.) car after he announces that the Greeks will remain on campus.
Patricia Hearst's guest appearance in the previous episode along with the guard-prisoner experiment and Moe's (Andrew McClain) remark about "it changes you" was a reference to Stockholm syndrome.
At 7:45 Keith says "Oh, very good, number one daughter" as he squints his eyes and affects a Chinese accent. He is paraphrasing a tag line from the old Charlie Chan movies in which that detective makes a similar compliment to his son.