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1.
when you wake up so late in the day that you cannot call your meal breakfast or lunch but a mixture of the two is needed
the equivalent of brunch but not with tea and cakes and far less formal
i woke up uber late today so i went to the kitchen to make some lunkfast.
by LittleMsTwinkleToes August 19, 2012
 
2.
Before breakfast and after lunch.
I'm going to have poached eggs and Blueberry Tillamook ice cream for lunkfast every day until I turn into a blue chicken.
by Bernard bumpercress August 16, 2014