And while the cause of most of these sleep remnants is fairly obvious, the reason behind those sometimes-sticky, sometimes-crusty gobs of crud that can dot the lashes or cling to the corners of the eye is less clear.
Santa's Little Helper's initial appearance on The Simpsons was in the first episode of the series, Simpsons Roasting on an Open Fire, which aired on Dec. 17, 1989. Since then, he has become a recurring character.
Related The Simpsons Questions. 1  what instrument does Lisa play on the Simpsons Lisa Simpson is an avid saxaphone player in the TV show 'The Simpsons', which has... 2  What instrument does Lisa Simpson play in the opening credits of the Simpsons Lisa Simpson plays an instrument from the woodwind family; the saxophone.