a 'markiplier cumshot' is when a person formally introduces themselves at their moment of climax.
"Hellllloooo everybody, my name is name".
"Dude, i was so drunk last night that i managed to finish on this chick with a markiplier cumshot."
"So you just introduced yourself to her then?"
"What do you mean i was already railing her don't you think we exchanged names before? Anyway she was a whore."
"Hey don't talk about my mother like that!"
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