09/02/2009 AT 01:45 PM EDT
Thanks to Justin Timberlake
, drinks were on the house for some lucky Las Vegas clubgoers Tuesday night.
The singer made a surprise appearance at Palazzo Las Vegas's Lavo, treating everyone in the club to a free shot of 901 tequila, the liquor he created and named after the area code of his hometown of Memphis, Tenn.
"This is a very special evening," he told the capacity crowd at 1 a.m. "Me and my buddy started a homegrown tequila down in Mexico and I wanted to make sure you guys got a taste, so I bought everyone in the bar a shot."
As the partiers, including girlfriend Jessica Biel
, raised their shots in glasses bearing the name "901", Timberlake said, "We should all believe in something and I believe it's time for another shot of tequila."
Later, Timberlake took to the microphone to beatbox while DJ Samantha Ronson played songs. Eventually, he moved on to the role of hype man, pumping up the crowd, saying "What's up, Las Vegas?"
When he wasn't working the mic, Timberlake was spotted hanging out at his VIP table with Biel, his best friend Trace Ayala, and his business partners in the tequila company.
And Timberlake is looking to expand his VIP circle: The singer posted a video
on the 901 Web site calling all fans to submit their "biggest and coolest idea" to market the tequila. Along with earning a $25,000 signing bonus and a trip to Vegas for the Justin and Friends concert, the winner will also be dubbed Executive Vice President of Big Ideas for 901, which Timberlake says "sounds superfancy ... That's because it is."
Timberlake will be returning to Vegas in October for a few more rounds – albeit, rounds of a different kind – as he hosts The Justin Timberlake Shriners Hospitals for Children Open.