Scott Disick serenades Kourtney Kardashian during 30th birthday bash

Scott Disick, who celebrated his 30th birthday with friends and loved ones at Bellagio's Hyde Nightclub in Las Vegas on Sunday, decided to snag the mike and take the stage for a few minutes.

An eyewitness told Us magazine that Kourtney Kardashian's long-time love was spotted rapping at the deejay booth at one point in the night.

The source said that it was tough to understand what he was saying as he was rapping to music, but it looked like he was just enjoying the moment.

Disick's fun-loving actions left Kourtney, Rob and mom Kris Jenner, who sat in a nearby table, laughing and cheering him on.

According to the eyewitness, not many people seemed to notice the familiar face at the deejay table as the club was very crowded.

Later, Disick even serenaded Kourtney and the pair smiled and giggled throughout the party.

"She was sitting on his lap at one point during the evening and the two genuinely appeared to be in love and appreciative of one another," the source continued.