Used to refer to something or someone random, or of no particular importance, or even someone or something you might dislike.

The 'ass' part has no meaningful contribution and is therefore a random ass addition.
Sally: "Where's Paul"?
Martha: "I dunno, he left with some random ass girl from next door."

I was walking down the street the other day when some random ass guy walked up to me and asked me if I had seen his dog. Wtf.
by Seraph_7 January 6, 2009
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When there be a random ass nigga u say supp random ass nigga
Random ass nigga with a random ass dick.
by Alec campione March 11, 2019
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A wildly off-topic question or statement that occurs with no warning. Most often seen when people are drunk.
In a bar drinking shots watching sports on big screens, "you know man, I like turtles", "man that is such a random ass tangent!"
by Inspectress Gadget April 6, 2012
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some random ass kid
some random ass kid
by some random ass kid January 25, 2022
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a silly or aggressively stupid act performed by your man for no reason other than to be an ass. This act can be either spontaneous or planned in advance.
While standing quietly in line at the cinema, her boyfriend unprovoked, impulsively grabbed her butt and yelled "oh, baby, your butt is getting so big", thus displaying yet another random act of assness.
by Amy W March 27, 2007
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