A large steamroller pipe that looks like a giant purple penis. Made by Graphix, this piece is legendary among those who have used it. Got its name after those who purchased it listened to "On A Boat" all the way home from the trip to get it. Traditionally used in the shed known as Da Boat House. It was confiscated by campus police on 3/14/2010. Its legacy lives on, however, in a small steamroller known as Da Dingy.
Dude, I just hit Da Boat and I am high as hell.