How I Met Your Mother: Murtaugh / Season: 4 / Episode: 19 (2009)

Lily's pep talk to Marshall to not be strict on the kids is a reference to the scene of Jessep being interrogated by Kaffee, Wienberg and Galloway from A Few Good Men.

During the kindergarten basketball game, Ted mentions that Marshall's subsequent retelling of the events became more ridiculous each time. At first, the opposing team consisted of grown men, but Marshall's retelling grew to include a werewolf player. The flashback then includes several shots of the wolfman slam dunking the basketball, as an homage to Teen Wolf.

The title is a reference to Roger Murtaugh, Danny Glover's character in the Lethal Weapon film series, who is constantly pondering retirement. The laser tag owner speaks to Ted and tells him he is "too old for this sh-" before Future Ted claims the word is "'Stuff.' He said 'stuff,'" which is a running joke from the film series.

The laser tag manager gives Barney one last chance but warns him he will be playing Duck Hunt if he doesn't behave. Duck Hunt is a video game from Nintendo that uses a light gun.

This song plays during the basketball game.