I dated a girl back in the early 90s that had what could probably be termed as a sloppy pussy. Not only was it really loose, but it would become seriously wet. She was great in bed though and I'd have to say was my second favorite sex partner, right behind Mrs Marcus. I would hint about doing some exercises, but she'd always shrug it off and just say, "Nah"
On a side note she also had a very loose ass. The first time we had anal it kind of freaked me out how it pretty much swallowed my penis. I wasn't complaining, but I wondered how many had been there before.