Well, I don't really encounters idiots, but here is a conversation with someone online who hates shipping.
Idiot: None of the ponies are lesbian *frowny face*
Me: So you're saying it's alright to ship FlimxLuna, DiscordxSpitfire and PipsqueakxLuna but not ApplejackxPinkie Pie? And I never tried to shove it down your throat, did I? And how do you know the ponies aren't lesbian? Have they shown (except Rarity) any signs of being straight? It's my opinion and you have yours, so if you don't like it, don't look at it.
Idiot: I dont ship any ponie's. Its a child show -_-
Me: Like I said, it's your opinion and that's my opinion. If you carry on like this I will probably block you.
This happened on Deviantart. Also, using the faces: O-o -_- does not make you smart.