Vaush has a preference for horse dicks, more specifically he want to be the horse. More specifically because he would love to have a giant dick to fuck people with.
It's an odd kink, but in general it's not remotely close to the weirdest stuff that people I've known have been into.
"Wishing to have a big ol weiner" has to be the most common sex thing for dudes behind "liking boobies". It's even in the bible.
Not to shit on anyone's thing, though, I gotta say, as someone who spent time caring for horseys and other farm animals, they got some icky gross private bits don't wish for that lol