So immensely fantastic & sexy, it will make you cum.
This new movie is just cumtastic!
by Camradal November 30, 2003
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Something so amazing that it makes your penis produce sperm without ever going erect.
That movie was cumtastic!
by ...And Then I Stabbed Him August 14, 2009
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a description of something that will make you cum easily. usually a person or a random object (only used with sarcasm). It comes from the word fantastic.
by fewofhewoghfwiei May 20, 2011
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When someone or something is both fantastic and delicious or fantastic and orgasmic. Cumtastic! Can quite literally be used during any conversation, but I find I use it the most when trying to emphasize how good food is or how delicious someone looks or makes me feel.
1; Did you see how good Morgan looked today? Mmm very cumtastic!

2; I had THE best chicken and waffles the other day, they were absolutely cumtastic.

3; I love how I can just be myself with her and tell her anything. Being able to be open with someone like that is cumtastic.
by The Top Bruh August 1, 2021
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When you think someone is fantastic to the point of wanting to cum in them
by Lil_nando June 3, 2020
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it is when you feel orgasmic and fantastic at the same time. it a like a burst of happiness and cumingness.
i feel cumtastic when i see ashleys tities.
it makes me wanna burst out a huge orgasm and shoot skeet flames all over her
by ballslsls July 19, 2008
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