it's physically impossible to masturbate anally. If <X>Blaze<X> actually spent the time to use commas (they are there for a reason), it would read "masturbating, anal, or regulr, or by intercourse."
And by anal, he's referring to anal sex. And this forum clearly says we cannot give instructions on how to do those acts, so it's left at that.
FYI, <X>Blaze<X>, use simple puncutation to prevent this kind of preventable confusion.