Top Definition
band taking its name from speedhorn, a metamphetamine induced erection
by Anonymous September 19, 2003
raging hard on. When the penis is erected very hard and stiffly
"lets fuck i have a raging speedhorn"
by Cedric May 23, 2003
When one takes a drug, namely speed, it is difficult to obtain an erection. Therefore, to have a raging speedhorn is an oxymoron.
Joe: "Omg Mark I have taken so much speed right now, look at my raging hardon"

Mark: "LOL more like raging speedhorn"
by Josski February 02, 2010
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