boxing that partakes underground that's not mainstream for the fame and glory and doesn't seek for popularity
"aye bro you trynna go to the boxing match?"

"which one?"

"its underground boxing bro you wouldn't know but its going to be sick asf"
by idkbroicantcomeupwithanything December 3, 2018
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When your friend from Waverly tells you a sad story about the past, you feel like you are riding on the "underground sailboat."
Thanks for bringing up that trip to Malmo, now I'm all chilling on the underground sailboat!
by Zaimejs September 9, 2017
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Coined by a member of Solar Cartel Ltd, an "underground dog" refers to a shady, cool individual reminiscent of iconic criminals like Al Capone. This term describes someone who exudes an air of mystery and edginess, operating in the shadows and involved in activities outside the law. The "underground dog" is known for their enigmatic charm and unconventional style, making them effortlessly cool, albeit in a dubious and underground manner.
"Watch out for that guy; he's like an underground dog, walking the line between the law and the underworld with ease."
by admiraldinonuggies August 1, 2023
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Is the Main Promoter of Scangeire Rap in Irelands Dublin Fair City,main artists are Mongoose Recycled Zone and Wilde Masked Brigade
Come to my gig its been promoted by Fluttertone underground,Class Man,I better wear my nike tracksuit.
by Colin Daggers November 25, 2020
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Watching unknown, hidden gems on Netflix. The type that wasn't in theaters but is highly relatable, fucked up, and funny.
"What's your Sunday looking like right now?"

"Just laying on the couch hungover. Probably watching some Netflix underground involving sex, drugs, and regret. Basically my night last night,"

"OMG I'm coming over. I found Strictly Sexual. Total Netflix underground gem."
by Blondentourage April 21, 2016
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The sexual act of going down on a girl and vaping into her vagina
My boyfriend cannot stop vaping! Last night he vaped in my pussy and called it and Underground Railroad. It kinda tickled though.
by Chu Chu Twain December 17, 2015
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The act of two males having intercourse with a single female a.k.a. "running a train" while under the bedsheets. An underground railroad is exclusively when this act is done by African Americans.
"Yo, I heard you and your bro ran an Underground Railroad on Shanockquolisha last night!!"

"Hell yeah! That sh*t was insane!!"
by TheOneAndOnlyHalfnHalf October 3, 2011
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