Butterfinger is a popular peanut-butter and chocolate candy bar. There have been 150 commercials for Butterfinger which featured The Simpsons beginning in 1988, when America's Most Wanted first aired.
Many of the commercials featured Homer trying to get Bart's Butterfinger, but would be one-upped by Bart each time. Each commercial closes with Bart saying the catchphrase, "Nobody better lay a finger on my Butterfinger!". In 1999, this was changed to “Bite My Butterfinger!”, then in 2001, it was changed to "Nothing Like a Butterfinger!", beginning in 2010, a slightly rewritten version of the Nobody better lay a finger slogan "Nobody's gonna lay a finger on my Butterfinger!" was introduced.