Seriously. What is this?

The Fancy Pony isn't the only horse I get to play with, but she is the only one I get to ride like she's mine...

There is another horse that flirts with me from time to time.  He's a big chestnut Arabian gelding that I've known since he was a baby.  I have watched him grow and mature, but he just isn't taking to Western Pleasure as readily as some people had hoped...

I rode him last week, and we worked through some very obnoxious fascinating discombobulation in the trot.

My answer to everything these days seems to be "send them forward!"  But, hey, when I sent him forward, his hind end synced back up with the front end, he would soften into the bridle, and O-M-G what a lovely trot!

The last time I rode him, he was just a bully who didn't want to go forward and wanted to hang on the reins.  He's winning my heart!  I have high hopes that he can keep learning this stuff and eventually pull himself together to become that nice Western Pleasure horse...

I think if anything is going to hold him back, it will be something else entirely...  You see, he dribbles...

OK.  He pees every 5 minutes or more!  He's been checked out by multuple vets.  He has been declared "fine".  But, he dribbles the entire time he stands to be groomed and tacked up - resulting in this:

Do you see him dribbling?

How can you show your face at a show when you won't even make it through the class without dribbling all over your legs?

He even does it when he's walking!

Have you guys ever encountered anything like this?