Oh, dear a typo.  Sigh.  Your position: prithee can be spelled anyway you choose because it is archaic and there were no spelling rules.  My response: chaotic spelling is allowed because it is tradition.  Which was meant to imply that you justify your blunder with a claim of tradition.  And that, as we True Catholics know, is the final argument.  Tradition.  If the Church has been doing it for at least 500 years, then it must always continue to do so.  This is what being a Catholic is all about.  But really, if you want to be cute and use a particular turn of phrase, then you should be a wee bit more careful, don't you think?