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.
The Simpson family are cartoon characters featured in the animated television series The Simpsons. The Simpsons are a nuclear family consisting of married couple Homer and Marge and their three children Bart, Lisa and Maggie.