Water Packing 

The act of putting your bare asshole up to the water jets of a hot tub and allowing the jets to shoot up your ass. You will then have the shits for the next week. (If you did it right)

Kyle: Hey, dude, I got the shits!
Ted: Why man?
Kyle: I think it's 'cause I water packed last night.
Ted: Whoa man.
Kyle: Yeah.
Ted: Now I'm gonna go water packing.
Kyle: Awesome!

Water Packing by Mark Merno August 6, 2011

Water Packing 

The act of putting your bare asshole up to a hot tub water jet so the water sprays into your crack and packs your shit. You will then have the shits for the next week, or day.

Ted: That felt amazing.
Walter: What?
Ted: I just water packed.
Walter: You went water packing?
Ted: Yes.

Water Packing by Mark Merno October 22, 2011

Water Parking 

When two men face each other, fully erect, and urinate on each other.

We didn’t go to the water park for the rides, we went for the water parking.

Water Parking by All Bets Hedged February 4, 2021