1 definition by Bernard Loungecarpet

nay-thah-gram -noun
A Nathan who appears seemingly from nowhere (often on a schoolnight) with a bag of beers and proceeds to skin up and chat till the early hours before passing out on one's sofa.
Sorry I'm 5 hours late for work and still in a state of confusion. I had a Nathagram last night.
by Bernard Loungecarpet April 29, 2010
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