What can you TAKE to make your butt grow?

squatting for 10 times, duck walk, and lifting your legs backward.

You can also do a sitting position, either against a wall for support in freestyle, in which all you do is bend your knees at a 90˚ angle, arch your back, and pretend like you're sitting down. It mostly works for your thighs, however, it also gives your Gluteus Maximus a workout.