What is it about mustaches that automatically turn people into serial rapists? Check out this 1973 commercial for Quick Curl Barbie and Mod Hair Ken, where Barbie gets carried away by Ken’s new rape-o ‘stache… LITERALLY!
This has been a public service warning from MOD.

Moustache has an ‘o’ in it. Jus’ sayin’.
And I’m not a serial rapist. There was just the one incident and I pled ‘No Contest’; doesn’t really count and I don’t have to register.
I resent that, sir. When I commit a rape, it’s artistry all my own, and my moustache has nothing to do with it!
While both spellings are correct, for my money “mustache” only has an “o” in it if you are a) British, or b) old-timey. However, I believe there is a further difference between the two: Serial rapists wear “mustaches” while statutory rapists wear “moustaches.”
Not to be confused with a moostache:
http://www.hamptonroadspub.com/blog/wp-con…