This is How We Do it - Montell Jordan
"Hey, Banner glad you made it!"
Bruce was already regretting his decision to stop by. Tony was armored up except his helmet, most likely because he was knocking back scotch like it was water.
He walked through the designated party area eyeing Thor and his Lady Love on the balcony. He spotted Natasha and Clint through the crowd of people he'd never even met before and made to join them, but Tony went to the DJ booth and called out to him.
This is how we do it!
"Banner! Come sing with me! I need someone who was older than 10 in 1990!" The man shouted over the intro.
Bruce shook his head even though he recognized the song. Tony could be the fool all by himself.
"Aww Bruce, you spoil pooper!"
Bruce just rolled his eyes.
"Fine I don't need you! I got this beautiful crowd to back me up!" They cheered. "I'm kinda buzzed it's all because," he sang surprisingly in tune.
"This how we do it!"
"Avengers do it like nobody does!"
At that, Bruce rolled his eyes, and if you saw him mouth, "This is how we do it," along with the rest of the crowd, he'd deny it.
