What is Shampiss?
1.
v. When an almost-empty bottle of shampoo is turned upside-down, and the shampoo that collects at the bottom spills out too fast when it's opened.
n. A practical joke involving urinating in another person's shampoo bottle. Also see
1. "God, I hate when I'm low on shampoo. I have to turn the bottle upside down."
"This is a problem how?"
"Well when I open the bottle, it tends to shampiss all over."
2. "That jackoff slept with my sister and never called her, so I made him some shampiss when I asked to use his bathroom yesterday. Serves him right."
See
