One degree of profanity lower than "motherfuckin".
"That sumbitchin asshole, just stole my cigarette lighter!"
by dougsmet February 19, 2014
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A word used to exaggerate the gravity of a given situation. Often used as an indicator of emotion in text.
"I'm from the sumbitchin cosmos, I need your pussy to survive earths atmosphere."
by Sum bitch son of a bitch February 3, 2019
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