Punchlines: Conan, Fallon, Letterman on Kentucky Derby

Ever wonder what happens to the losing horses after the Kentucky Derby? One late-night comedian has a theory (hint: it involves Ikea). Take a look at some of the other Churchill Downs theories from last night's lineup.

After you watch our favorite jokes, vote for yours in the quick poll to the right. Watching from your tablet or smartphone? Then cast your vote at opinion.usatoday.com.

Punchlines: What's going on with the horses at Churchill Downs?

Ever wonder what happens to the horses after the Kentucky Derby? One late-night comedian has a theory (hint: It involves Ikea). Take a look at our favorite jokes then vote for yours at opinion.usatoday.com.