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1.
When Tanner is being dumb. Like, quite literally. He doesn't even realize what he is doing.
Shelby: "Hey Caitlin, he is buchive again!"

Caitlin: "Are you kidding me?!? He has been buchive all week."

Example #2

Shelby: "This word in urban dictionary is just gonna make him buchive."
by uquaco-the double trouble team August 03, 2011