David Phillips: No signs of sexual trauma!

(This is a running joke throughout the episode. Each time a corpse is processed, David makes this pronouncement until Dr. Robbins gets so irritated with him that he orders David out of the morgue.)

Title: You Kill Me

The term you kill me is an English euphemism for telling a joke that is either very good, or very well told, such that the listener might die laughing so hard. The term can be used either seriously, as a complement, or sarcastically, indicating that the teller is very bad at telling jokes. The meaning can usually be derived by the context (if you say it laughing, it's a complement. If it's said with a straight face and no laughter, it's sarcastic).

David Hodges: It's like Clue!

Cluedo, known as Clue in North America, is a board game (similar to the one Hodges has created) where the players need to solve a crime and find out which room in a building the victim was killed in, what the murder weapon was and which of the house guests was the killer.