Tonight's Big Bang Theory Quotes : "The Irish Pub Formulation"

Tonight's quotable quotes from The Big Bang Theory.  Raj's sister comes to L.A. for a visit and gets cozy with Leonard.  And more classic Sheldon.  

Also, I didn't know foreigners give presents to Americans on Thanksgiving.

Sheldon: Why would I change?

Raj: Hands off my sister...

Sheldon: Why would I touch her, she's so covered in airplane germs.

Sheldon: Apparently you hate fun.

Sheldon: Kill Troll! Hit Troll with Axe! This is one tough Troll!

Sheldon: it's a shame our society mocks the differently uvulated.

Pria: I could never bring a white boy home to my parents. They's have a cow.

Sheldon: I'm no stanger to the topological scurge that is dermatitis.

Sheldon: I was ready to waste the last of my hemroid cream on you.

Sheldon: I had a patty melt.

Leonard: I'm the Darth Vader of Pasadena.

Sheldon: You're far too short to be Darth Vader.

Sheldon: Alfred knows that Barbara Gordon is Batgirl.

Napkin from Maggie McGary: Call me if you are interested in coitus.

Howard: How could you, we had a pact!

Howard: While we're at it, you don't have to wash my clothes on the 4th of July.

Raj: Sheldon, I'm sorry I used your toothbrush.

Sheldon: Mango-Caterpillar