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Flagnogg can be used to describe that giddy feeling you get when you and your friends start randomly laughing over nothing or you can use it as a cuss word. You can also describe a perfect sunny day as a flagnogg day. These days are usually spent outside.
FLAGNOGG! That hurt so bad!
Hahaha I'm so flagnogg rn!! Hahaha
Wow. What a flagnogg day it's been.
by Grandmagotranoverbyareindeer December 13, 2016
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