Can't believe we don't already have a thread for strange videos running.
So here we go.
This one comes out of Thailand. It is a bee colony, apparently brown backs with black undersides. They flip over in a weird way as a warning to others, before they will go in to ATTACK mode.
48 seconds:
Giant Honeybees form shimmering waves, the behavior is likely in order to deter bee predators (such as hornets) - Thailand
I guess one might call it their "Make My Day" warning.