It was a battle to see who had the most talked-about tight pants on Monday's Tonight Show.
Will Ferrell got the crowd going when he stepped out singing about squeezing into his skinny jeans, but things got really exciting when Christina Aguilera hit the stage.
"Everybody's talking about my tight pants, my tight pants," Ferrell and Aguilera crooned. "I got my tight pants on!"
Host Jimmy Fallon also showed up to sing about his tight pants to the disapproval of his peers. "Ever since we moved to this town, everybody we know has been talking about our tight pants," Ferrell touted.
Things start to get heated when the Zoolander 2 star defends Aguilera, who plays his wife in the sketch. "You listen to me you fat face cobb knobler," Ferrell told Fallon. "I don't know who you are or what butt hole you crawled out of, but this is my woman."