Other mistake: House and Wilson are in the Mens room, and there is a tampon/sanitary pad dispenser. (00:21:30)
Merry Little Christmas - S3-E10
Other mistake: Just by looking at Abigail's mother, it is obvious that she does not have cartilage hair hypoplasia (Meredith Eaton has pseudoachondroplasia).
Answer: It comes from the phrase "Everything but the kitchen sink." He's saying that House has thought of "everything but the kitchen sink."
Garlonuss ★