Toilet Split Squats
Unless you want a foot full of poop water, make sure that toilet lid is closed and secure before you start this exercise. Split squats are a great way to get those legs stronger and they will really get your legs burning after just a few.
Start in standing and reach one leg back for the toilet. While standing on one leg with the other leg behind you on top of the toilet, bend your knee and sink yourself down to the ground. Make sure your knee doesn't pass over your toes and you stay as upright as you can. Repeat until that front leg is burning and then switch.