Size of the boat

The "Boat" refers to the size of a penis. The expression is used when a person says when he/she talks about penis size. This statement is usually countered with the motion of the ocean.

The motion of the ocean is better than the size of the boat.

Size of the boat by Jimmy Balmar March 17, 2010

it ain't all about the size of the boat, it's about the motion in the ocean 

meaning that regardless if you have a small or large penis, as long as you give the girl pleasure, then you have absolutely nothing to worry about

girl: how big is your cock?
guy: 6 inches
girl: ok, i'll go with that
guy: you need to understand that it ain't all about the size of the boat, it's about the motion in the ocean
girl: yeah, yeah whatever.

it ain't all about the size of the boat, it's about the motion in the ocean by choppaz-n-ninez January 12, 2008