After fiercely pursuing and fantasizing about a potential love interest, bud zoning is the act of relegating said fantasy into a "friend" and no longer being able to picture them as an object of sexual desire.

Bud zoned is the word to refer to a guy that is no longer a sexual interest to a female pursuant.
Friend: "How did your date go?"

Tina: "I can't picture kissing him!"

*Friends make eye contact."

Friend: "Bud zoned!"
by XXXTina October 17, 2012
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pertaining to, but not limited to, a friend who may be an outcast or just out of the loop and is therefore placed in the aforementioned "bud zone". From this point all other friends continue to point out that he is in the bud zone and give him ridicule.
Travis pech: Hey guys, do you want to hangout?

Friends: Bud zone
by Buystedt January 2, 2013
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