Someone who is annoying or will not stop annoying you (Coined by Darby Crash in L.A in the late 70's)
"Piss off, Cactus Head"

"Donnie's such a Cactus Head"
by HawkRing March 6, 2016
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Someone who is annoying you or is being an idiot.

Originating from the LA punk scene in the late 70's.
by HawkRing May 6, 2016
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