That one bite of food that you just can't eat because you are too full.

Or, that last bite of food that makes you feel like you are going to be sick.

Reference to Monty Python's Meaning of Life. More specifically the first sketch of "Part VI: The Autumn Years".
Oh, that was my wafer bite. I think I am going to be sick.
by Jaime Rama April 16, 2011
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