I kinda like it. Also like bedspins, for some reason I got them a alot as a child/teenager. Was like my own personal roller coaster ride every night. I rarely get them now :/
I didn't get them that often, but it's been many years now. Likewise, I found them quite enjoyable, an intriguing experience I wish I had experienced more often!
Imagine every muscle in your body lightly twitch all at the same time for a single instant and without warning. I'm not sure why it is associated with a falling sensation, but it doest make you think of that. Maybe there is a brief feeling weightlessness when it happens?
Seriously though, your brain is doing a solid job of paralyzing your body as you drift off. For many of us, there's an in-between stage where we are dreaming, yet our body tries to react. Mine used to always hit when I went to step off a dream curb.
Notice in dreams you can't move quickly when action is required? Everything is slo-mo, heavy, thick. You can't punch, run, fuck, nothing goes right. I assume you get that part?