"The Little Drummer Boy" (originally known as "Carol of the Drum") is a Christmas song written by Katherine Kennicott Davis in 1941.
When Stewie realizes that people are losing their jobs at Printex during the Christmas season due to him in "How the Griffin Stole Christmas", he notes that he realizes that he's ruined Christmas, like the Little Drummer Boy when he got into Neil Pert. In a cutaway, the drummer boy is shown ditching his single drum for a complete kit. After a wild solo, he kicks over the manger containing the baby Jesus and proclaims Christmas will be "sick."
The Little Drummer Boy is voiced by Ty Simpkins.