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A way to say hello and good bye at the same time, used when you see someone for the first time that day but have to leave immediately.
You wake up and are running late and see your girlfriend and say "Hi bye" then run out the door.
by Westley E April 12, 2008
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Hibye is defined as a quick greeting when you are to busy
and can't talk.
I was walking to the store and Molly passed by really fast and she looked at me and said hibye.
by bigginz July 30, 2009
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