A MPV (multi purpose vehicle) that (unlike most of them) can actually cross muddy fields, ford every stream, climb every mountain etc.
by poodlewrestler August 5, 2005
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 HeadsIwinTailsulose March 5, 2015
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.
by FatWillysSurfShack June 16, 2016
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 Cunbunal December 16, 2017
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 Crablouse April 22, 2009
When you are fucking a girl doggie style and you put your thumb in her ass to steer the direction of the motion
by humandumpster May 11, 2010
by afuk-king ejet August 7, 2023