Stall Tactic

My girls's new way of stalling to go bed has to do with giving me a million kisses, over and over, again and again. I know they are stalling but how can I say no? I love their kisses!! We give esquimo kisses, butterfly kisses, super super fast kisses, and then when I finally leave, they call me back for more kisses! This stage in their life won't last much longer, so think I will take it while I can :) and forget what the books say ! LOL