The song you’re referring to is “The Warning” by Eminem, which was released in 2009 as a direct response to Mariah Carey’s denials of a past relationship with the rapper. In the track, Eminem takes aim at Carey, threatening to expose private details about their alleged romance, and hints that he has “proof” that could damage her reputation. The song is part of a series of back-and-forths between Eminem and Carey, which stemmed from personal issues and accusations, including those involving Nick Cannon, Carey’s then-husband.
Regarding “Merry Christmas”—there’s no widely known or famous Eminem song by that name. However, Eminem has released several holiday-related tracks, with some being playful or satirical, like his “A Holly Jolly Christmas” parody or the “Christmas in Hollis” cover from the Bad Santa soundtrack. If you meant a specific holiday track by Eminem, please clarify, and I can provide more information.
If you’re referring to a song with a similar title or a different track, feel free to provide more details!