I mean this has to be the best joke in How I Met Your Mother. It’s legen – wait for it – dary. This is from the episode “The Rebound Girl” and it features a cameo from Ernie Hudson, who played Dr. Winston Zeddemore in Ghostbusters:

(via: Imgur)

So what do you think is the best joke in How I Met Your Mother? Post it in the comments below!