Cael's partner was really focusing on her shield spells and he didn't want to interrupt her again so he decided to go ahead and practice a few Flipendos by himself.

Wriggling his wand in the complex serpentine pattern he cried, "Flipendo!" while pointing his wand at the floor so as not to hit anyone accidentally. This time the spell worked.

Perhaps a little too well.

When the concussive force of the air met the floor he actually managed to knock himself a few feet straight up into the air with a surprised, "Gah!" Landing on his bum awkwardly in exactly the same spot he had been standing, he burst into the 'you're not really sure what the heck just happened, but it was awesome just the same' kind of laughter, rubbing his bruised bum as he picked himself up off the floor.