Motorbuttin' 

The same exact thing as motorboating but with someone's ass.

Man I was motorbuttin' the shit out of this chick last night.

Motorbuttin' by Groundcontrol23 July 5, 2017

motorbutt

To Motorboat the butt-cheeks, not the breasts.

That girl has such a fat ass, I just want to Motorbutt her!

motorbutt by Zach and Claire February 24, 2008

motorboatin son of a bitch 

n; One who motorboats --
n; Term applied to one who puts there head in between a females breast, moves there head side to side makeing a motor boat sound.

I was one motorboatin son of a bitch last night.

Did you see the rack on that girl that I was motorboatin?

I was motorboatin that hot stripper last night.

motorboatin son of a bitch by autumn festival August 21, 2007

Motorbutting

When you draw nipples on her asscheeks and motorboat her ass.

"I'm so motorbutting you tonight."
"What the fuck is that? Is it another one of those weird Urban Dictionary sex things?"

Motorbutting by zephwynder June 13, 2018

motorbutting

The act of perform a motorboat, but on someone's anus.

We were about to start some rusty trombone, but it wasn't hard, so I turned to doing some motorbutting.

motorbutting by scumbeater November 15, 2013

motorboatin son of a bitch 

1. one who enjoys motorboating frequently

2. john wilks booth!

1. man he is a motorboatin son of a bitch on carolanne all the time

motorboatin son of a bitch by riceninja69 June 16, 2009

Motorbutt

See ass motorboating

Yo, Jimmy, have you tried that motorbutt move yet? It's ass fun as motoboating.

Motorbutt by rupicaprarupicapra January 3, 2018