Jimmy Fallon is celebrating Teacher Appreciation Week with a catchy new song honoring all that teachers do.Like so many parents who are getting a first-hand education in how difficult it is to be a teacher as they homeschool their children amid the coronavirus shutdowns, Fallon is singing the praises of teachers everywhere, literally.On Tuesday's, Fallon debuted his «Teachers' Day Song.» The host and comedian performed the song while strumming his acoustic guitar and crooning the celebratory tune, which starts with a sentiment almost everyone can agree with: «Teachers should make a billion dollars.»«They spend their days wranglin’ all our crazy kids/ When they go out, they should get free bottomless wine/ Teachers deserve a month-long spa