bad-hair day OR bad hair-day?

[RonButters at AOL.COM]

In a message dated 1/25/2000 8:29:48 PM, P2052 at AOL.COM writes:

<< 'Okay, not a great example!  What about a comparison with "Sweet Sixteen"
party?   As in "bad hair" day,  the adjective plus noun form a unit (in which
case neither receives any real stress). thus making, " Sweet Sixteen" party,
as opposed to Sweet "eixteen party." >>

too many syllables