Ladies... Be careful you don't get pregnant watching this, because if anyone is capable of getting you pregnant through a YouTube video, it's definitely former Sexiest Man Alive Adam Levine. 

In a private performance last week, the Maroon 5 front man took a few minutes to sing a couple of his favorite songs, including his own "Sunday Morning" as well as covering R. Kelly's "Ignition (Remix)" (scroll ahead to the 4:25 mark for that)