Steamboat 

While suffering from acute flatulence, stick your ass in a girls breasts and fart. Related to the motorboat. Not to be confused with the hot carl or the cleveland steamer.

After eating Chipotle for dinner I had such bad gas I gave my girlfriend the steamboat last night.

Steamboat by KingCox February 5, 2006

Steamboat 

When you are wearing a turtleneck sweater and you fart, the fart gasses will travel up your pants, up your sweater, and exit through the turtle-neck opening at the top of your shirt. The turtle neck acts similar to a funnel on a steamboat (aka steamship, steamer).

After finishing a two-pound burrito and leaving the restaurant in his turtleneck, Javier was farting so much he resembled a paddle steamboat traveling down the Mississippi.

Steamboat by Gullywood Productions November 27, 2014

steamboat 

To get completely, hopelessly and utterly drunk or "off yer face". Words and phrases of the same definition include "steaming", or "getting boats".

Me and the boys are getting on the steamboat tonight!

steamboat by m January 26, 2004

Steamboat 

The act of taking a hit of weed then going under water and blowing out all the smoke. The bubbles will then pop at the surface of the water and smoke will come out resembeling a steamboat.

Randy: Bill you'll never believe what happened last night at Joey's house.

Bill: What the hell happened man?

Randy: We were all in the hot tub smoking some white widow and i looked over at waka and he was doing the mother fucking steamboat.

Steamboat by WakaFlockaFlame9559889 March 11, 2010

steamboat 

derived from the use of steaming to mean drunk, steamboats means you were exceptionally drunk on a particular occasion

I drank too much last night, I was absolutly steamboats

steamboat by catormo February 15, 2005

Steamboat 

The act of inhaling marijuana smoke, then exhaling it while performing a standard motorboat

Guy 1: what did you do with that girl last night?

Guy 2: we were smoking a blunt and I steamboated her titties.

Guy 1: Nice!

Steamboat by I<3 Smokin' Titties October 29, 2012

steamboat 

Similar to motorboating.

Instead of placing one's face between a female's breasts, an individual instead elects to place his or her face between a woman's ass cheeks and performs the same actions one would do while motorboating.

Chuck: Hey Zach, what's that brown smudge on your nose?
Zach: Haha, I was just steamboating my girlfriend a few minutes ago and I guess I forgot to towel off

steamboat by RockSteady22 March 15, 2011