Smug couples
According to MSN News, top things that annoy us about happy couples are
1. Cute nicknames
2. Public displays of affection
3. Finishing each other's sentences
"You know, this appetiser reminds me of..."
"...that dish we had when we were in Paris!"
4. Utter condescension
He's smart and good-looking; she's smarter and (hatefully!) gorgeous.
5. Even more utter self-absorption...aparently... A happy couple could cruise by a twenty-vehicle pileup on the M25 involving a bus full of nuns and a Girl Guide troop, and all the girl will say is something like, "you see the orange-yellow upholstery in that people carrier? That's what I had in mind, only a little less obvious."
I'd add to that...Mr and Mrs Perfect always have damned good salaries and purchased their property before the boom