I always thought my alter ego pony would be more colorfull...and not have bubbles for a cutie mark.
Seriously, though, I am the "mass destruction"/clumsy type myself and if it weren't for some great friends that keep me in line...well...things would get TOO interesting. So I take it as "Bubble Butt" being an indiviual and RD being the friend that keeps her from blowing stuff up on a regular basis.