Shower torment
From wipipedia.org
Shower torment is a scene where the victim is trapped in a shower, possibly tied to the shower head.
The victim is of course naked; the captors may also be naked, or they may wear swimsuits. The victim may suffer humiliation, such as intimate examinations of the genitals and anus, or bars of soap stuffed in the mouth. He or she may be spanked, or scrubbed. Many other activities are possible.
