bad-hair day OR bad hair-day?

[RonButters at AOL.COM]

In a message dated 1/26/2000 12:04:00 PM, db.list at BYU.EDU writes:

<< What about what i said earlier is the way i've tended to hear 'bad hair

day'--'2bad 2hair 2day'? Would we have to say that, given such a stress

assignment, there's no grouping at all? >>

Well, I'm no acoustician, but I'd tend to think that such a stress pattern is
impossible for English. Can somebody help us out here?