A Magnum slap is when your girl playing games with you so you slap dat hoe with a magnum (the condom) on your hand
by Bloodstone02 February 22, 2018

The act or product of collecting corn riddled shit, mounting it of a wooden stick, wrapping it in an ice cream/ popsicle wrapper, and placing it in the freezer in wait for an unsuspecting victim.
Barry had the munchies so bad last night he got halfway through the corn magnum before he realised something was wrong!
by Sudomite September 11, 2023

A magnum hard on is when you look into the eyes of a man laying alseep on the floor and get a massive erection and it pokes said man or woman and wakes them
Tanner: “oh yeah you look so sexy sleeping”
Titan: “what’s poking me?”
Titan: “yucky tanner get your magnum hard on away from me”
Titan: “what’s poking me?”
Titan: “yucky tanner get your magnum hard on away from me”
by Lookatmetantan October 7, 2023

by TrashPanda81 February 16, 2022

by 1061fannyontap May 30, 2022

a very large penis
by teeeaaaaaa August 27, 2021

by Tylerbliss:) November 20, 2018
