Bill Murray stopped by Jimmy Kimmel Live in Black Swan makeup and some sort of Shakespearean or renaissance garb to discuss the Cubs and Mets playoff series. Kimmel is doing a week of shows in Brooklyn at the Brooklyn Academy of Music's Howard Gilman Opera House. Kimmel was born in Brooklyn, and is an avid Mets fan, while Murray hails from Chicago and is a lifelong Cubs fan. They both attended the game on Sunday. Surely everyone thinks there must be a reason that Murray was dressed in this costume; perhaps he lost a bet because his beloved Cubs lost. But the reason is because Bill Murray gets weird whenever he feels like it. Sometimes he goes on TV when it looks like he's had a few drinks. Sometimes he randomly hops in strangers' engagement photos.

Sources: Jimmy Kimmel Live