A sexual undertaking very similar to the act of "motorboating" a woman's breasts. However, the "boating", if you will, occurs in the anal region of the recipient (male or female).
Dude#1: Hey man! Did you see the way Stacy was walking this morning?

Dude#2: Yeah. She looked like she took a belt sander to the ass.

Dude#1; Yeah man! Thats cause I gave her the ole Garbage Barge.
by My penis is August 3, 2007
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The act of waking up each day, gathering armloads of random information, disregarding all context surrounding the gathered muck, grabbing one's Huck Finn stick, hopping onto a floating device on which the garbage has been piled, pushing off out into the lake, picking up each item, and screaming about it. Meanwhile, the people on the banks only really hear the seagulls.
Bystander 1: "Uh-oh, Garbage Barge Greene's on the float again. I wonder what random act of ignorance she's going to shout about today."

Bystander 2: "It's the nature of a garbage-barge politician, Garbage gonna barge."

Also can apply to the act of politicking, as in "Garbage Barge Politics"
by Heinous Realist August 18, 2023
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