Anal+Pussy= cumshot

I once tried my hand at a very, very difficult maths problem. "Anal+Pussy". I can't cum yet, so we'll have to go through the maths together. If you rub your ass with oil and let a fat cock fuck it, but then find out that the cock is so big it's better for a hot pussy fuck, then... hmm what comes out then? Ah, now I've got it! ... then a huge load of cumshot comes out right in my face. PS. So big that I choked ;)