mercy iuiuiiuiuiuji
That was ridiculous.
I lucked out. I was sitting at my desk at home when I read this. I have carpet in my home office, but I also had a clipboard on my desk. I used my feet to pull the board off the desk onto the floor, and then leaned back to pull my mouse off my desk. That gave me a surface to foot-mouse my way back to the page (it minimized when I dropped the mouse).
The hard part was typing. First I tried the nose; no dice. I was able to type with my big right toe while leaning back on my hands, but the pants around my knees made it hard to see what keys I was hitting. After much backspacing, I got 'mercy' out... and a smash of I's and U's.
Probably took ~15 minutes all together.
Finally, I used my two feet to navigate my mouse to the Submit button.
Thanks for the fun challenge.