OK, just what the heck is a 'Christian hairdo'?
good question *lol*
For males, one that looks masculine, is practical, and does not imitate some well-known failure called an artist.
At least that's what I believe.
That made me think of Carman and the "ponytail comin' out the front of their head". :-)
I'm going to go out on a limb here and guess that it is something of a reasonable length (no mohawks or crew cuts) that isn't dyed pink, purple or green. Also no spikes or anything else that might suggest rebellion or free thinking.
.It is biblical, and is not just something to take as a story. It's mentioned in the Bible more than once, and before the 18th century, most women would've been ashamed to have had even collar bone length hair.
Maybe he's talking about a Night Ranger/Sister Christian hairdo? Motorinnnn.....What's your price for flight....In findin' Mister Right....
It's not a permanent wave. Those are the Devil's work. Ask any woman who has one. :)