The guys got silly striking vintage JoBro poses.

The worst dancer in 'N Sync? Lance put Chris Kirkpatrick on blast.

Merv Jonas, the reclusive fourth Jonas Brother, stopped by to serve drinks.

Kevin and Lance swapped stories of life as boy banders.

Andy reflects on what he'd call his boy band if he had one.

Three men and a shotski.

Super Bass.

Brother, can you spare a Jonas?

Lance Bass and Kevin Jonas appeared on the Sept. 12, 2012 episode of WWHL.

These guys.