You begin to realise how long your hair is, when you try to wash it in the basin for the first time.
If you have a bad back, don’t even try to wash your hair in the basin!
When you pour water over your hair, try not to pour it down your back and all over your clean, new T-shirt.
When you wash your hair in the basin, don’t wear a clean, new T-shirt. Wear an old insignificant T-shirt.
And finally, when you wash your hair in the basin, remember to put your towel nearby. Otherwise, you have to commute across the bathroom, thereby causing a flood on the floor!