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The residual beer from last night, found in open cans when cleaning up from the night before. Warm and flat, optimally consumed on the morning before a college basketball game. It is the responsibility of the individual finding a Breakfast Natty to get down on one knee and finish the quality beer that is Natural Light.
Mike: Hey Mitch, would you like to try some of my Breakfast Natty.

Jimmy: Holy shit Mike, is that really Natty?

Mike: Hell yeah it is!

Rob: Hey Mike, can I come talk to you for a minute buddy?
by Sex 8888 December 14, 2011
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