My Little Pony: Friendship is Magic - Image #247,270

And here Lyra demonstrates that a "hornjob" as you guys call it is going to be a lot less sexy than you guys make it out to be. I mean, it's a spike of solid bone that grows out of your skull. Magical conduit or not, the horn isn't going to have a lot of nerve cells (it does have some so it can transmit pain when fractured) and, well, it's on your face. Jerking your head around like that does not make for good foreplay

Plus, it wouldn't really be sexy for the sucking party either since it's, I repeat, SOLID BONE