How to ‘raise the roof’ in five easy steps:
1) Take your hands
2) Position your palms upward
3) Move your hands up and down repeatedly
4) Wait for others to join
5) Scream “the ceiling can’t hold us” to encourage others
And if that doesn’t work, just awkwardly look at the people around you while gesticulating with your hands.
(Vine via CMTomlin)