Grand Canyoning

After titfucking a busty girl, cum between her tits unexpectedly and let the cum flow down between her tits.
Her tits represent the scenery, and the flow of cum represent river Colorado.

The phrase Grand Canyoning is a verb.

Example:
-"...I heard you had a 'special night' last night.What did you do..."
-"...I Grand Canyoned on her.She was surprised but it was amazing..."

by DepressedRetarded May 31, 2017

Grand Canyon

Large, gaping, smelly void between Marjorie Taylor Greene's legs. Some have compared it to the Sarlacc from Star Wars. Others compare it to the dentition of Stephen King's character Pennywise.

That smell from MTGs "Grand Canyon" is probably worse than the smell of 1000 rotting tuna.

by anonymous April 25, 2021

The Grand Canyon

The act of pissing between ones butt cheeks, creating the visual of the Grand Canyon.

“Tonight, Martha and I are going to go make the Grand Canyon”

“Sheila and I cant make the Grand Canyon because she’s too flat”

by Cakeman June 14, 2020