Jon Gosselin hosted a party at the MGM Grand Hotel's Wet Republic pool Saturday and RadarOnline.com has the only video from inside the bash.
Most of the 2000 party-goers were girls in barely-there bikinis but the few guys who braved the crowd had themselves a field day at Jon's expense.
They heckled the Jon & Kate Plus 8 star about his bald spot, asking him about the cost of hair plugs; his weight; his pecs, or lack of; even his clothes -- and he wasn't even wearing Ed Hardy!
Jon had four friends with him but that didn't stop him from mixing and mingling with as many women as possible.
He had the welcome mat out at his cabana in the club's VIP section and even took phone numbers from several girls as he downed a glass of Veuve Cliquot Champagne.
Not all the women there were Jon fans however. Some came just to get out of the 115 degree Vegas heat. One woman even held up a Team Kate sign.