After Rainbow Dash pulls off multiple rainbooms using Thruster units, everypony wants to try them out. Even alicorns are interested in the speed and power of flight given through the use of devices that convert lust and arousal into thrust.

Shenanigans ensue.

Note: This is most definitely not intended to be a serious story in any way, shape or form. The only reason there is any...ahem...plot, at all is because I can't write without there being some sort of story.