A viennesse shower is when a dwarf from Vienna is contracted to urinate on your face.

when you’re outside and it starts down pouring and you instantly get soaked

The act of peeing in your lovers butt, then laying on the bed while they stand over you and spray your piss all over your face! It's the Unlimate Golden shower!

The act of paying a homeless drug addict (or similarly repulsive person or people) to urinate upon someone.
Generally used as an insult.

When you piss at the urinal, and your piss sprays back at you

a surfer shower is used after a long day at the beach to rid the user of sand. to make a surfer shower, simply get an empty container ( fruit punch or milk cartons ) and fill it with water. when you get to the shore, leave the surfer shower in your trunk. as the day ends and you’re ready to go home, the water will be warm and you can rinse off before tracking sand in your car.

Being sprayed by beer.