High Quality Content by WIKIPEDIA articles! The curse of the Billy Goat was supposedly placed on the Chicago Cubs in 1945 when Billy Goat Tavern owner Billy Sianis was asked to leave a World Series game against the Detroit Tigers at the Cubs` home ground of Wrigley Field because his pet goat`s odor was bothering other fans. He was outraged and declared, "Them Cubs, they ain`t gonna win no more," which has been interpreted to mean that there would never be another World Series game won at Wrigley Field. The Cubs have not won a National League pennant since 1945 and as of 2012 have not won a World Series in 104 years.