1. The phrase you tell someone when they are going too far with a subject and/or arguement and they need to let it go.

2. The phrase you tell someone who tries to enter a conversation that they aren't a part of.
1. Jim: "Your hair looks stupid today."
Billy: "Your MOM looks stupid!! And so does your father and your brother and your sister!"
Jim: "I was just saying."
Billy: "And your aunt and your cousin and your grandmother!"
Jim: "Dude this was over five minutes ago get off the boat."

2. Mary: "Dude that concert was so awesome last night!!"
Jill: "I know right!!"
Mary: "...you weren't even there. Get off the boat."
by mightywheaties April 5, 2011
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To tell someone to get over something. To get over it.
Mark "I can't text you because it costs money."

Margie "It's only ten cents, get off the boat."
by Christa H June 9, 2006
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when there's someone on your boat that there shouldn't be, the only logical course of action is to don an Irish accent and attempt to reason with them, asking them to get off your boat. If this fails you must get your Jamaican friend and force them off your boat.
Get off me boat. I said get off me boat. Right, I'll be getting my Jamaican friend now.

RASCLAT. why you on me boat mon?
by Swenson Bevel September 28, 2008
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