1 definition by Ray Jolly

Top Definition
When you urinate/deficate/throw up into a cup at night, then rinse it out and fill it with beverage of choice and serve to disliked houseguest the next morning. thus becoming morningcup.
I gave him morningcup to drink out of. i had just pooped in it last night!!!
by Ray Jolly July 12, 2011

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