Define Riverboat Meaning

Riverboat
A MPV (multi purpose vehicle) that (unlike most of them) can actually cross muddy fields, ford every stream, climb every mountain etc.

Darrin's new Probe is a real riverboat but it has a shitty gearbox
By Brittni
Riverboat Gambler
alludes to one who takes undue risk, wagering on the outcomes of inconsequential events and activities either for money or out of compulsion

Sylvester bet me that the next automobile to pass on Route 66 would be a turquoise Chevy Colorado. He is a riverboat gambler.
By Noellyn
Memphis Riverboat
When a person goes in for a Cleveland Steamer and hits your belly instead... And goes on to churn the result like a Riverboat

Big gay Dennis went in for a tiajuana backpack, but lost his footing and ended up with a jelly belly which he turned into a Memphis Riverboat
By Chrissie
Mississippi Riverboat
Much like the motorboat, except you take a runny shit on the woman's chest first. You then proceed to motorboat her, and every few seconds you lift your head up and yell "Mark Twain!"

Shari wanted me to give her a Cleveland Steamer, but I gave her an extra treat when when I gave her a Mississippi Riverboat instead!
By Karrah
Egyptian Riverboat
When a couple decide to take their relationship further, with both parties shitting in a bathtub, and then one partner receives anal sex in the reverse cowgirl position. Like riding a boat.

Hey Babe, wanna take a trip on the Egyptian Riverboat?
By Caprice
Mississippi Riverboat
When you are fucking a girl doggie style and you put your thumb in her ass to steer the direction of the motion

She was pulling away so i had to mississippi riverboat her ass back on track
By Corie
Mississippi Riverboat
Akin to a Cleveland Steamer, the Mississippi Riverboat is accomplished by first getting the runs, then taking a liquid shit on the neck and chest of a woman, at which point the shit runs down her like a wide, muddy river

I had enchiladas for lunch, which turned the Cleveland Steamer I laid on her into a Mississippi Riverboat
By Lauraine
Upside Down Riverboat
This is a sexual act that is similar to the "69". The female participant is on top and holds her arms straight while servicing the gentlemen on the bottom. The male holds the females feet in his hands and rotates the ladies feet in a circular motion to resemble the propeller on 1850's riverboats.

David Wilcox's "Riverboat Fantasy" must be playing for the entire duration of the Upside down Riverboat.

This sexual position was inspired Cowboy's and Alien's which features an upside down riverboat.

So then we Upside down Riverboated all night.
By Charissa
Riverboat Style Hand Job
When a girl gives you a hand job using both hands. Fist the right up the shaft then the left....repeat. Kind of like milking a cow only there is only one teat.

My girlfriend asked me if I wanted a regular or riverboat style hand job.
By Jenelle
Chinese Riverboat
When a man is penetrating that sweet poon poon, he fists the women right in the mothafucking ass and finds where his dick is in the vagina and starts to rub his dick from the anal canal until he cums in a furious rage.

Jerry got shit all over his hand after doing a Chinese Riverboat in a well mannered prostitute.
By Shanie