Millionaire rapper Rick Ross spent $400 on burgers for his crew - and then invited all the catering staff to a pool party at his mega mansion.<br /><br />The 27-year-old artist held his annual Rick Ross Car and Bike Show in the grounds of his sprawling 109-room $5.8 million Georgia mansion named 'The Promise Land'. <br /><br />He asked burger truck Shack Attack to cater the event in Fayetteville, on June 3. <br /><br />But staff were shocked when he pulled up in a golf cart and handed staff four $100 bills for around 40 burgers, fries and lemonade for his entire entourage.<br /><br />A video shows him handing a staff member $400 while saying: "I want motherf***ing $400 worth of burgers right now."<br /><br />Shelby Ford, whose partner runs the burger business said: “Rick Ross had heard about our food in the past, so he specifically requested our burgers for his event.<br /><br />“He gave us $400 and ordered burgers with lettuce, pickles, onions, tomatoes and ketchup.<br /><br />“He was a very nice person and very generous - a great tipper. All his staff came to eat at our truck afterwards.<br /><br />“After that, he invited us to a pool party at his house.” <br /><br />The car show saw the rapper show his 1959 Chevrolet Bel Air, as well as vehicles owned by enthusiasts including a purple Lamborghini Huracán with an airbrushed portrait of Kobe Bryant across its hood and a lime green C8 Corvette Z06. <br /><br />Fayetteville County authorities initially turned down the rapper’s request for a permit to hold the event, it was reported.