I think part of the reason people say "Happy Holidays" instead of "Merry Christmas" is so they do not accidentally instult someone who may not celebrate Christmas, and instead may celebrate Quanza (don't know if I spelled it right), Haunaka, may not be religious at all, or celebrates some other form of religious practice. I tend to say Happy Holidays instead of Merry Christmas if I do not know the person's religion, but if I do know they are Christian I do say Merry Christmas, and if they're Jewish I say Happy Haunaka.
"It's a gun you loaded on Sunday, and shot all week."
"If God didn't create man equal then Sam Colt had made them equal."
"Fast is fine, but accuracy is everything."