Comment obligatory very early xkcd reference (Score 3, Funny) 432
"Unfortunanely, there seems to be no pattern yet", but what about secret messages?
The reason for this comment is the misspelled 'barbecue'. If you really want to spell it with a "q", then spell it 'barbequeue' to get the right pronunciation (just kidding, just kidding).
As to my vote: You insensitive clod!, because this poll seems aimed at US readers exclusively. In Holland, the first of May is not an official holiday but is observed by some.
The Wikipedia article on Labor day targets the U.S. holiday, whereas the article on Labour day discusses the general phenomenon (and references May Day and International Workers' Day).
By the way, on 7 September I'll probably go sailing, for the last time this year.
He has not acquired a fortune; the fortune has acquired him. -- Bion