Sloppy sandcastle 

When you bury a man on the beach, lying on his back, with a snorkel. The only thing exposed is his erect penis sticking out of the sand, which is being blown by a woman.

I was on the beach with my girlfriend last night. It was my birthday, so I convinced her to give me a sloppy sandcastle!

Sloppy sandcastle by Dustinj321 October 14, 2017

Compton Sandcastle 

When you sutff a garbage can until you can absolutely fit no more in it, and when you go to throw it in a dumpster upside down, the bag stays on the can, but the garbage itself goes into the dumpster, but comes out like sand from a bucket at the beach.

I took the trash out to the dumpster and made a Compton Sandcastle.

Compton Sandcastle by notfunnyhahafunnyqueer February 21, 2011

Salvadoran Sandcastle 

While having sex with a woman and she upsets you while using a condom pull out and insert your member in a cup of salt and reinsert back into the woman forcefully.

Me and Jess were booking up and she pissed me off so I gave her a Salvadoran sandcastle... Haven’t talked to her since.

Salvadoran Sandcastle by 1LoKota October 24, 2020

Urban Sand Castle 

When a public toilet becomes clogged, but people continually defecate into it, overfilling it with feces until the fecal matter stands on it's own weight in the bowl and over the toilet itself, often resembling a sand castle.

Man, did you see that sweet urban sand castle in the KFC bathroom?! It's getting huge !

Urban Sand Castle by Ballz Johnson September 7, 2016

Alabamy Sand Castle 

When during an anal sex creampie, you carry her to the kitty litter box with your dick still inside of her anus and then have her cum-fart into the catbox for the cat to bury.

I gave this girl an ALABAMA SAND CASTLE last week, her cat hid the pie in the castle. She's gettin' the ol' alabamy sand castle after we get cat litter.

Alabamy Sand Castle by barkingspider September 26, 2011

sandcastled 

When a guy dips his member in the sand and sticks it up anothers butthole.

Dude I woke up at the beach with sand in my butthole; I am pretty sure that dude I hooked up with last night sandcastled me.

sandcastled by Dirty Sanchex 44 May 26, 2010

Sand Castle 

Verb:

When taking a poop, of such that it is like wet sand, it piles up like a sand castle above the toilet water.

*Leaves sand castle in toilet*

Guy 1: "Who sand castled the toilet!"

Sand Castle by McHuge3 November 18, 2013