OH, how often I've felt this way!
I really do have great self-control in what I say. Sometimes, though, I remember the line from 'The Wizard of Oz', which goes something like:
"I'd love to tell you exactly what I think of you, but I'm too much of a Christian to do it!".
Not focussing on anyone in particular, just thinking aloud at 11:30 pm - time for bed, maybe?