verb (used with object)
To ruin, mar, destroy, render useless, or otherwise annihilate.
Wow you really buttnecked your dad’s garage door by backing the truck into it.
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a neck that looks like a butt because of the fat on the neck
"check-out that guys buttneck!!!!"
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When it's so cold outside your butt, neck and all extremities are in danger of hypothermia.
"Yo Jeff if I were you I'd call out of work tmrw, it's bout to be buttneck brick."