You blast your load so deep inside an individuals arse it comes out their mouth when they spit it out.
Ruth: Blast it!

Kayla Harry: (load blasts)

Ruth: (Vomits the load out her mouth)

Kayla Harry: Woah you just performed Mouth Cum!
by Grant Hansen July 5, 2018
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mouth-cum is the blob of jizz that a guy can get when he's jacking off and part of his cumshot splurts in his opened mouth.
I wanted to taste my own cum, so I put my heels on the wall and jacked off so that when I blew my load - - I'd get a good amount of mouth-cum to swallow!
by USAF Cadet October 27, 2020
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When you are dehydrated and as a result sometimes form a crusty white pastey substance around your mouth.
Ryan went for a jog today, and when he came back he had Cum Mouth. I didn't tell him to save him the embarrassment.
by XSpence January 7, 2009
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When you splooge in a loud, obnoxious woman's mouth that also smells like a fresh caught bass.
Hey Stewart, remember that loud drunk bitch at the party last night?
Well, I went fishing with that ho and I caught the largest cum mouth bass ever.
by T Town Playas January 28, 2006
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