Oh you better watch out better not cry You better not pout I'm telling you why Santa Claus is comin' to town Well he's a making a list checking in twice Gonna find out who's naughty and nice Santa Claus is comin' to town He sees you when you're sleeping he knows when you're awake He knows when you've been bad or good so be good for goodness sake Oh you better watch out you better not cry Better not pout I'm telling you why Santa Claus is comin' to town [ whistle - strings ] He sees you when you're sleeping... (Santa Claus is comin' to town) Oh Santa Claus is comin' to town