Person: *says something rude about their friend's OTP*
Their friend: *waits until the person's OTP comes up* *says something rude about it*
Person: Just because you don't like it doesn't you have to be rude about it
Their friend: *gives them the are-you-serious?-face* REALLY

Yes, I decided to just copy&paste these here instead of linking to the original DeviantArt post(s)
And I'll probably post most, just not some that weren't so... Awe inspiring.