The exact meaning behind "King of All Excuses" is unknown. Due to the single's lack of popularity, questions concerning the song have not been asked during interviewing of the band, and lead singer Aaron Lewis has not openly given any elaborate background information or history involving the song's inspiration. When performed in concert, Aaron Lewis has introduced the song briefly by sharing a brief amount of insight about the meaning behind "King of All Excuses", by saying:
"This next song... is about a piece of shit excuse for a person."
The song has an angry and violent tone to its lyrics and rhythm, possibly making "King of All Excuses" one of Staind's heaviest singles and overall heaviest song on Chapter V. The lyrics reveal the certain person Aaron Lewis singles out and addresses during the song as a pathological liar that negatively took advantage of his trust and friendship.