Kimmy tells Gretchen that the Reverend claimed to come up with the "Buy the World a Coke" commercial. Jon Hamm, who plays the Reverend, also plays the part of Don Draper in Mad Men, a character that did come up with the "Buy the World a Coke" commercial.
Kimmy gets a call from Cyndee Pokorny, one of the other women from the bunker. When Kimmy answers the phone, Cyndee replies with the line: "Hiya Kimmy, its Cyndee Pokorny, we put a mad man in jail together." This refers to Richard Wayne Gary Wayne, who kept them in the bunker and is played by Jon Hamm. This is a reference to one of Hamm's most famous roles as a "mad man" in Mad Men.
The bar Titus and Michael try to get into is named SCOTUS - an acronym for Supreme Court of the United States.
Lauren Adams (Gretchen) gets a lion tattoo on her chest, in reality the actress was born under the Leo sign.