Top Definition
Noun: An undesirable person or object that is unwanted and rejected.

Adjective: Used to describe someone's repulsiveness. (For lack of better words)
Example 1: "Hey Jim! How was your date?"

Jim: "Dude... She was a straight up trashboat. I couldn't even eat."

Example 2: "Don't bring that trashboat to my party bro, or I'll fuck your sister."
by Bigtree June 27, 2012
2 more definitions
When you wake up at 6:30am and find yourself wearing nothing but very small underwear and a time bomb, you suddenly realize your in a trashboat.
Oh no my friends tricked me and now I'm on a trashboat.
by Jamezisboss March 18, 2015
The act of of shitting in your pants, but on a boat.
Guy 1: I shit my pants!

Guy 2: Uh-oh! We've got trash boat!
by The master of the hot carl May 14, 2013

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