1 definition by I<3 Smokin' Titties

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!
by I<3 Smokin' Titties October 29, 2012
Get the Steamboat mug.