OK. I'll confess this thought germinated from my trollish petty tendency to bully...what's his man today? The Saint? I think so. Anyhow, it actually is a fairly engaging philosophical question. It looks like the tallest sex doll they make is 5'9". And it is a dude.
Or it *represents* a dude. It's a hunk of rubber, probably with a steel skeleton, glass eyes, and a wig. So if 5'9" and buff makes the nut, why not get an effeminate male sex doll, whack its wiener off, get a longer wig and some falsies (they really wouldn't be falsies, given that the rest of the body is rubber too) call it Loretta and get your freak on?
Or say your kink is pegging. They don't seem to make transexual sex dolls. But is it any gayer to buttfuck yourself with a "female" rubber sex doll with a rubber strap-on dildo than it is to just cut to the chase and get a sex doll with the wiener attached?