Biggest horse you have ridden?

I rode a 17.3 yesterday....
Little different from my 13.3 : L

My sisters 18hh Canadian warmblood.

A polo pony I rode at camp. He was such a sweety but I couldn't groom his butt at the time. About 17.2hh?

My ex-boyfriend's draft cross, who was 17.2hh.

17.3 hh draft x TB

I leased him for a while as a sixth grader. I was a little shorty (probably not over 5')... it was hilarious, but I tacked him up and rode him on my own. I had to lift the saddle over my head to get it on him... and I had to jump from the mounting block to get on. If I rode him bareback too long, my hips would get sore from sitting so wide. I'd ride him up in the pastures, and I could swear you heard the earth moving when those huge feet of his thunked down!

17.3hh Warmblood. I don't like riding big horses anymore though. 15-16hh is ideal for me.

18 hh Percheron. I only trail rode him, but he was a foxhunter and I saw him jump a pickup truck!

18 hh draft cross ex grand prix horse. I triple rode him with my friend and this little girl at the barn!

19 hand Belgian, at MO State Fair, years and years ago. So big that my legs stuck straight out it felt like. It was summer between my 6th, and 7gh grade years.

He was massive.

My old mare a T 18.hh, tall thing.