[In fairness, Johnny is one of the most Bishōnen of all the Jojos, so he doesn't make for a very intimidating looking figure - monster horse form notwithstanding.

[It doesn't help that he's skinny little colt with a cute little star mark on his shoulder, like some kind of mirrorverse my little pony.]

It's an easy mistake to make.

[His flat tone implies he means anything but.]