Keg stands or beer funnels may have been crowd pleasing party tricks back in mommy and daddy's heyday, but as hangovers worsen and children enter the picture, a parent's idea of a good time changes dramatically. Instead of dancing to deafening music and staying up to watch the sunrise in a state of inebriation, older versions of their former selves enjoy livin' it up with their innocent wee ones. Taking the place of a foolish friend doing the worm are a pair of two-year-olds holding hands and boogieing down while laughing uncontrollably and singing, "Shake, shake, shake... Shake, shake, shake. Shake yo butty!" Rather than relishing their wild years, most parents live for the moment and count their blessings with the newest dance moves invented by their mini mes. And when the kids go to bed, who says mom and pop can't fire up their old moves?