Fuck, Susie!
You read my mind! I know exactly what you're talking about, because I saw a sunshower in a catalog one time.
Instantly, I didn't think about any showers. I saw the potential to use the thing as a big, 5-gallon enema bag! The only problem is that it's black to absorb the solar rays, and heat the water. So, I can't see the water inside.
Do you want an unlimited enema? Here's what I do. I tie my bag to the shower head, BELOW the spray. You don't need all the water. Just the edge of the shower spray. That will keep the bag filled tip-top forever. Fuck, I don't pay for water. But, one day, I wouldn't be surprised to get a nasty letter from the Sewer and Water people for draining all their reservoirs into some little girl's ass. But, hey, it takes a LOT of water to have a good time! What can I say? And, I never worry about looking vanilla. Hell, I'll go in and buy douche bulbs, tampons for my girlfriend, enema bags, whatever! I just look 'em in the eye, without a hint of shame or embarrassment. You wanna know what I'm buying a douche bulb for? Just ask. You see that hot little fox in my car? Need I say any more?
Anyway, karma to you Susie! You're a real player too!