Underman, or undermensch, is the opposite of Nietzsche's 'Uberman', or overman. Underman is what man will devolve into, and will assume a state close to that of a feces-flinging chimp.
John: Did you see the Henderson kid? He can't do anything but drool and suck applesauce.

Jack: This is what happens when paternal twins marry: they produce the underman.
by Vader1941 June 19, 2010
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Guys, Sands underman is commiting yes with my mom :(
Guys, Sands underman is right under my bed RN H E L P

guys sands underman is so pro 😱
by Sands underpro December 1, 2021
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Being full; usually used after a meal or large snack
Izaak: man that was a good meal
Dagen: undermans up
Izaak: most definitely
by Bonkzzz April 6, 2022
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The act of being a pro at making nuclear spaghetti bombs to throw at ur enemies.
oh no, I farded!
I'm also a pro at papaya underman.
by Sands underpro February 22, 2022
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The act of leaving your children to get milk for 1000000000000000000 years, instead in a more meme way (I'm talking to you gaster thing smh)
HELLO CHILDREN, I'VE CAME BACK WITH THE MILK! -caster underman
by Sands underpro March 2, 2022
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