All Shook Up What makes for a stellar booty shake? "The key," confided Heather Locklear at the inaugural viewer-voted My VH1 Music Awards held at L.A.'s Shrine Auditorium on Nov. 30, "is to wear something tight around your ass." Booty Shake nominees Christina Aguilera, Jennifer Lopez, Ricky Martin, Sisq� and Britney Spears took note. Martin won, while Will & Grace's Megan Mullally boasted to EW: "I could give those bitches a booty shake they'd never f---ing forget." Meanwhile David Spade showed up, despite being z-a-p-p-e-d by his assistant a day earlier. "I thought it was brave of him," host John Leguizamo told EW�before whipping out his own stun gun. "You never know when your friends are going to turn on you." Shocking.�William Keck