band taking its name from word speedhorn/word, a metamphetamine induced erection

Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)

raging hard on. When the penis is erected very hard and stiffly

When one takes a drug, namely speed, it is difficult to obtain an erection. Therefore, to have a raging speedhorn is an oxymoron.