The "Busty Twins", that are in the bar scene pouring alcohol down Eddie's throat, are Liz and Julia Nolan, contestants from Big Brother season 17.
Jack takes Eddie to the Weiner Circle hot dog stand. That is a recreation of an actual restaurant of the same name in Chicago near Wrigley Field. They also do hurl insults and make fun of you when ordering. They also dare you to do bizarre tricks to get your food for free.