John Legend Impromptu Universal Performance

John Legend is always a good time and clearly when he's 'wine drunk' he's even more fun.

Friday night, just one night after Halloween, John Legend and Chrissy Teigen went to Halloween Horror Nights at Universal Studios Hollywood before it shut down for the season, and fellow theme park guests got quite the treat.

John took to social media to post that while they were at Universal the costume theme of the night was onesies, so he and Teigen dressed up in style.

“We bought a few new ones and raided the closet too and found the perfect one for me to wear,” Legend captioned an Instagram post on Saturday. “Someone made Chrissy a onesie with my face on it and of course I had to wear it.”

He then drunkenly took to the stage and sang to the crowd. Check out Chrissy's commentary for the night below.