A broken beer bottle; usually used for self-defense in a bar fight, or as a deadly weapon in a rumble and/or your standard bumfight.

Two-Bit Matthew's weapon of choice when a gaggle of Socs roll up on him, Pony Boy, and Johnny at the Drive-In.
I got into an argument with this guy down at the pub last night, and he cut the shit out of me with an Irish Switchblade.
by Detroit Steve February 6, 2012
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A broken beer bottle held in the hand and used like a knife.
Two drunk guys got into a fight in the bar and one them turned his beer bottle into a Mexican switchblade.
by Kongo Kong April 23, 2018
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Myswitchblade is home to a wide variety of switchblades! From EDCs (Every Day Carry), to a beautiful gift for a family member, a missing knife you need for your collection, or a starter knife for you newbie’s. Myswitchblade.com has what you need!
There are many manufacturers that make these knives such as: Gerber, Smith & Wesson, Buck, Schrade, and Boker to name a few. Most are side opening, but there are also OTF (Out The Front) knives. An OTF is a knife that the blade deploys straight out of the top of the handle. Know more at MySwitchblade.
by My Switchblade December 17, 2018
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A sexual act where one partner swings around the head of the other using their legs and pees
She is a freak she gave me a golden switchblade and my clothes were covered in pee
by Himason9 April 12, 2019
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A gadget for the nintendo switch that turns the controllers into switchblades.
I just bought the new Nintendo switchblades.
by Daw2207 April 18, 2023
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The perfect weapon for friendly murder :)
And also for protecting yourself from Karen >:)
Ben: Time to get out my Nintendo Switchblade!
Karen: The WHAT?
by AydinDDT2009™ September 12, 2022
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