"Macaulay Culkin is finally off the Meth and looking alive," one user wrote.
Culkin, clad in a blue suit and large black glasses, took to the stage during the awards ceremony to present the Favorite Male Artist: Pop/Rock to Post Malone. Fans took to their social media accounts to share their shock at seeing the "Home Alone" star.
"Macaulay Culkin is looking like your best friend's older brother who's a professor at some liberal arts college and I'm not mad about it," one person tweeted.
"Had no clue the AMAs were on..turn it on and Macaulay Culkin aka Kevin Mccalister is the host?!" another joked.
Read more tweets below.
Macaulay Culkin is looking like your best friend’s older brother who’s a professor at some liberal arts college and I’m not mad about it. #AMAs— Derek (@DdotRock) October 10, 2018
i want you all to know, we were ubering to hollywood yesterday and i happened to glance out the window and MACAULAY CULKIN was just casually standing on the road— ✩ ᴛᴀʀɪɴ ✩ (@tarinbell) October 10, 2018
Had no clue the AMAs were on..turn it on and Macaulay Culkin aka Kevin Mccalister is the host?! pic.twitter.com/qiUcBl5V5i— Chris Polo (@cpoloo) October 10, 2018
legit thought Macaulay Culkin was Ellen when he just popped out to present this award 🤣 #AMAs— Mark Sundstrom (@106th) October 10, 2018
Macaulay Culkin showing up like pic.twitter.com/2G4TrI1z7P— derek schwartz (@derek_mafs) October 10, 2018
Brother Macaulay Culkin from Home Alone just have an award to Post Malone and my brain loves it. Home Malone....— Ms. Marano (@my_mathteacher) October 10, 2018
My daughter seriously thought Macaulay Culkin was still a little boy, she loves home alone lol. She was shocked that he grew up already. 😂— Nikki (@silverfreak005) October 10, 2018
Got a story or a tip for us? Email TooFab editors at firstname.lastname@example.org.