A tub with raw sewage, human remains, and unrefined oil, which is used to wash, but not necessarily clean oneself, in order to mimic how Germans in the 1700's once washed themselves. (They still do it they're just really good at hiding it)
Bending her over the side of the tub and while she slips and splashes trying to get out of the water you continue to drill her from behind. She's just been bathed in a Hillbilly Bathtub.
When an elderly, orange-tinted man sits in the Oval Office with the mental clarity of lukewarm dishwater and somehow manages to drain the country while insisting he's "filling it up."
Usually involves shouting at furniture, confusing weather maps with coloring books, and claiming divine victory over common sense.
Reverse Bathtub (noun)
1. A depraved aquatic maneuver where, instead of soaking in a tub of water, one brave soul becomes the bathtub. Usually involves the "tub" lying on their back in a kiddie pool while one or more participants "fill" them with a questionable blend of body fluids, bath bombs, regret, and occasionally a rubber duck. Not recommended by any licensed plumber or therapist.
"Last night got wild—Tina said she wanted a bubble bath, but Kevin showed up with a snorkel, lube, and a tarp. Full-on Reverse Bathtub situation."