The meme stems from NSYNC's 2000 smash hit "It's Gonna Be Me." When singing the titular line in the song, Justin Timberlake annunciates the word "me" as "May." According to a 2016 article from E!

May is approaching, and with that comes "It's gonna be May" memes featuring singer Justin Timberlake. The widely mispronounced line from NSYNC's 2000 hit single "It's Gonna Be Me" has been an ...

The meme — which originates from a line sung by Timberlake in the 2000 hit “It’s Gonna Be Me” — was born in 2012, according to the database KnowYourMeme, and lives on in photos ...