The difference between showers and growers.
Medically speaking, the only difference is that showers generally do not length with erections with some few exceptions and growers do just that, they add inches to their penises with an erection. In the end, generally with some uniquely endowed guys, there is no difference when it comes to one of the main roles of our penises, erections.
When it's hanging down your view is foreshortened so it looks smaller but when erect you see the full length with the result that most men think they grow a lot more than they really do.
If I remember rightly almost all penises grow by about two inches (five centimetres) from flaccid to erect so smaller penises actually grow more in proportion.
Shouldn't this be in the gardening posts? I'm a grower. The allotment is receiving a lot more attention since covid19 . There are onions, garlic and potatoes in, there are seeds sprouting from every window ledge, and the tiny green house is bursting with life. I don't show the produce because it's too much hassle.
The showers help the growers by keeping the plants well watered.