Derived from the term "Machine Gunner".
Someone who constantly makes bad puns. So many puns come out of his mouth so fast he could be compared to a machine gun. He'll have the whole party groaning after the fifth joke.
Ironically, "Machine Punner" is a pun off the term Machine Gunner
Little Brother: *pun*
Little Brother: *pun*
Little Brother: *pun*
Little Brother: *pun*
Little Brother: *pun*
Little Brother: *pun*
Little Brother: *pun*
Sister: Ughh, stop it! You're such a Machine Punner!
by guymanchester August 26, 2017
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