A Magnum slap is when your girl playing games with you so you slap dat hoe with a magnum (the condom) on your hand
"She was playing games so I to Magnum slap that hoe"
by Bloodstone02 February 22, 2018
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A screw up so big, that it'll be the only thing your legacy will be remembered for.
Elon Musk's destruction of twitter was his Magnum Oopsus
by MrLint April 7, 2023
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The Latin meaning for „Big Mac
magnum — Big
Maccium— Mac
Lucius ad tabernam Macci Donaldi properant et magnum Maccium emunt. — Lucius rushs to the MC Donalds store and buys a Big Mac.
by Mare.red September 16, 2021
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A big fat species often referred to as Your Mother.

The species originally came from a distant galaxy long ago, and crashed into the earth at high speeds approximately 10,000 years ago.
Alright students; Go to side nr. 84, cause today we are learning about Magnum Deformis.
by Pablo's Friend October 8, 2022
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The greatest and most powerful weapon in the multiverse, capable of wiping out an quintillions of ymas in seconds
Hey Brendan did you hear that billy, yeah that really cool one in year 9. So apparently he absolutely annihilated that yma girl with his patented Billy’s anti-yma extra ultra magnum quantum laser death ray pulveriser of awsomeness
by Shisosbegudhdhddh July 12, 2023
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