Well I haven't contributed to this before so I don't want to just change it, but as I remember the mnemonic (vintage appx. 1963) it goes like this:
Mary's violet eyes make John stay up nights praying.
Also--it does rather make a bit more sense this way, doesn't it? I mean, what's the "period" doing in there? Seems like an afterthought.
Search engine hits are heavily against the version I recollect, but I would caution against using pure SE counts as the only argument, since I suspect many of these are copied from each other, and thus should really only be counted once. In particular, we could have a skewed count as the perceived authority of Wiki causes others to copy the citation, whether it be correct or not.
I can't resolve this, but leave it here for others to reflect, and perhaps, comment on.