To move one's lips in synchronization with a recorded speech or song

Worst boy band (if you want to call them a band)to hit since New Kids On The Block.

"Syncing up" is achieved when two males and one female participate in the sexual act of an Eiffel Tower, or a three way, and both males achieve orgasm at the exact same moment. It is a very unique situation that has to be very intricately timed in order to simultaneously ejaculate, or to sync up.

When wasting time doing nothing important

a bad exscuse to call a group of people a band.

One of those awful boy bands. Contrary to popular belief, only one of them is gay (not that that matters). Only of particular interest to shallow little teenagers.

One of the worst bands on the planet who can easily be compared to Britney Spears and The Fagstreet Boys.