This season of The Big Bang Theory is all about relationships and this week was no exception. Penny's dad pays a visit and the guys monitor a telescope. And of course, things get out of control. Leonard: Whoever uses the bathroom after The Thing. Sheldon: Whoever gives Wolverine his prostate exam. Raj: There are no stupid questions. Raj: Is that racist, it feels racist. Sheldon: I don't like novelty editions of Monopoly. I like regular and Klingon. Howard: That happens with me and my mom all the time. Shelton: By that standard Penny is Coo Coo for CoCo Puffs. Penny: You don't have a neck tatoo or outstanding warrants. Penny: Get over yourself. I whistled, you came running. Raj: Not if it has a hole in the middle. Bernadette: So we just stare at the screen waiting for something to happen? Howard: I did that when you rented "The Notebook" Howard: Galileo drank Diet Sprite. Bernadette: I just worked with penicillin resistant gonorrhea today, and I was wondering if I washed my hands. Wyatt: That petition looked real to me. Sheldon: Oh frickety-frack, not this again. Howard: Can't go any further, there's a sacred cow in my way. Leonard: You have to admit, I'm delightful. Sheldon: FYI, over use of the phrase "Oh My God" is number 12. Raj: if you like roaming around a big empty house with no one to love you. Wyatt: We're fishin', right here on his couch. Wyatt: I want to have grandkids before I die, and I don't want them growing up in a house with wheels. Sheldon: I have completed the Penny-specific section of the new roommate agreement. Sheldon: We are not alone. Leonard: Did you get to play with Raj's big telescope last night? Raj: He never touched my telescope.