"Bless you!"
Not the phrase itself, but the offence some people take when I don't utter it after they sneeze (what with me being neither religious nor superstitious).
(Vice Admiral Sir Charles Cockbrush KCB MBE DSO, who is finding it increasingly difficult to log into b3ta.com wants to duck your aunt and kick your puppy, Tue 13 Apr 2010, 14:17, 4 replies)

How many souls
has the devil added to his coffers through this negligence?
( baw__bag contains traces of nuts on, Tue 13 Apr 2010, 14:30, closed)

My (supposedly) Roman Catholic flatmate has turned this on its head
When anyone sneezes near him, he swivels round and intones "NOTHING HAPPENS WHEN YOU DIE".
( MatJ LOOK, Tue 13 Apr 2010, 14:55, closed)

I like that greatly
and I may have to steal that.
( sandettie light vessel automatic New Twitter - @bollocksreally, Tue 13 Apr 2010, 15:38, closed)

I hate this too, I try not to say it but then there can be a tense silence after they sneeze.

Some people I know say it all the time, it's exhausting listening to it
*sneeze*
"bless you"

-pause-
*sneeze*
"bless you"

--bit of a longer pause--
*SNEEZE*
"bless you"

.....SERIOUSLY????
( awayfromthenumbers, Wed 14 Apr 2010, 9:11, closed)