Meaning
His own leg now repaired, House treats two patients dealing with different types of paralysis.
Cuddy: "Why did you."
House: "Why does a dog lick its workplace-acceptable euphemism for testicles?"
House: "Oh, I stuck that primo! How rad am I?"
Cameron: "You're lucky he didn't die."
House: "I'm lucky? He's the one who didn't die."