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Cinnabon makes cinnamon rolls with a white icing on top (which look like cum). Cinnacum is when u cum on a cinnamon roll and your girlfriend eats it.
Boy: Hey babe, breakfast is ready come to the kitchen.
Girl: What's for breakfast?
Boy: Cinnacum!
Girl: Yum! Nothing better than a cinnacum!
by xxxSexyDonutxxx August 26, 2017
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