Roommates, you know when a moment just hits different and fans lose it immediately? That's exactly what went down when Lil Mama unexpectedly joined Bow Wow on stage during his Brooklyn tour stop. Now, the internet can't stop talking about the surprise reunion and the energy they brought.RELATED: Who's This For? Fans Demand Answers After Bow Wow Shares Cryptic Message About Replacing Performers Ahead Of 'Boys 4 Life' TourLil Mama Crashes Bow Wow's Brooklyn ShowOn Saturday night, Bow Wow hit the Barclays Center and brought the vibes.