(from wikipedia):
House (also known as House, M.D.) is an American television medical drama that debuted on the Fox network on November 16, 2004. The show's central character is Dr. Gregory House (Hugh Laurie), an unconventional and misanthropic medical genius who heads a team of diagnosticians at the fictional Princeton-Plainsboro Teaching Hospital (PPTH) in New Jersey.
One of the doctors who has worked with House is Dr. Remy Hadley played by Olivia Wilde. Dr. Hadley is most frequently called "thirteen" because she was the thirteenth person to apply to work with House, and House could never remember her name, so he called her by her number.
In recent past episodes, "thirteen" has been absent, but in the episode that aired April 11, 2001 titled "The Dig" she re-appears, and we learn that she has been in jail. House shows up to drive her home. At one point during the trip home, House stops at an address Thirteen has given him.
House waits in the car while she gets out, goes to the door and rings the bell. A man answers, and after a brief greeting we can't hear, she knees the householder in the groin. She returns to the car, and House says to her, "I didn't know you were a Jehovah's Witness." She replies, "The weak lost faith when Christ didn't return in '75, but I still believe." (She was being sarcastic.)
I'm trying to find a snip of it to share with y'all...