A large boat with a whole bunch of young attractive girls with fake boobs and nipple tassels on jumping up and down on the boat to the beat of the music. there is usually a large bar on board.
I was on my yacht when I saw a large boat go past Granville Island in Vancouver, and it was a boat with lots of young attractive girls on it. these girls were jumping up and down to the beat of the music wearing bikini bottoms and tassels.
this was my thought process
wow, look at all those skanks.
that is a lot of bimbos in one place
those bimbos are on a boat
it is a Bimboat