The General Ideas
Some general ideas to remember about bathing together. When cum mixes in hot water it general begins to congeal, rather quickly too. This turns the viscous ejaculant into a very sticky substance that if allowed to dry around hair is difficult to remove. Word to the wise is to try and avoid letting this happen. If you are going to make your man ejaculate while bathing, be sure to either have some tissue handy or to take the cum in your mouth and either swallow or spit into a tissue. Secondly, this applies to most women, not all, water tends to absorb vaginal secretions, making it difficult to keep lubricated in the bath. So, if you and your partner wish to practice vaginal intercourse in the bath, try to keep it above water. More over though, this is actually not that bad of a place to practice anal intercourse, due to the cleanliness and the fact soap can be used as a partial lubricant (for the anus only). Too much soap in the anus can become irritating, although the rectum will be spotlessly clean. Do not put soap in the vagina. It will cause major irritation and pain. If your a man and you want to know what it feels like, try to push a bit of soap down the opening of your penis. You won't ever want to do that again.
Lather up her body and don't miss an inch of that gorgeous skin, from shoulders to toes. Avoid washing her face, she's not a child and most people find little enjoyment from it. Now that she is fully lathered in suds it's time to get down to the main course. Soap up her vulva, washing between her outer and inner vaginal lips. Spread her lips apart and gently wash her clitoris (Do not allow soap to go inside her vagina, can cause infection). Run your soapy hand down the crack of her buttocks and rub a finger all around her anus. If you are planning on some anal play, stick one finger in her anus and wash around inside too. To get her thinking in the right direction stimulate her vagina by rinsing your fingers off well and sticking one or two inside her, making a circular motion; like washing the inside of a tall glass. Do not try to push your fingers in and out of her vagina, water has a very nasty ability to make her vagina not so lubricated. Always remember this, water is not a lubricant and it does not.
Lather up his body and pay extra attention to his genitals. Take his penis in your hand and lather it up and by basically masterbating him. Wash all around the head and down the shaft. If he has foreskin, pull the foreskin back gently and wash around penis head. Run your soapy hand down the crack of his butt and rub a finger all around his anus. If you are planning on some anal play, stick one finger in his anus and wash around inside.
Think of showering just like bathing except your standing up. The whole issue with water making her less lubricated virtually dissappears. The only thing you really have to remember about the shower is that both of you are in there and it is cold at the back of the shower. Try to be curteous to your partner and share the hot water with them. Other than that it is all about fun.
There are a great number of toys that are waterproof and that can greatly improve your bath time.