It is similar to just shitting on someone, but it has to be diarrhea, otherwise it is not a rusty shower. One can do this on any part of a person's body, but its funnier if you start on the top of the head, like an actual shower head.
Larry was so drunk that he gave his dog a rusty shower and now his dog is always skiddish around him. It's sad really.
The act of urinating on someone while menstruating. The congealed blood causes the colour of the typically golden stream to resemble the initial ruddy burst of water to flow from rusty plumbing.
Jon always wants to gargle my rusty shower.
I intended to give Kyle a golden shower but aunt flo
decided it would be a rusty shower instead.
The act of deficating on another person, usually for sexual gratification, or as a way of humiliation.The runnier the feces the better.
Joe continued to give Andrew a Rusty Shower while Andrew was like "FUCK!"