Top 16 Exercises to Make Your Buttocks Bigger Fast 2019 | Better Booty. 1. Biking: Yes, biking can be a part of your butt exercise routine. It enhances and strengthens your thighs and hips. You can do this with your loved one, friends, or alone. Take in your local sceneries and enjoy the weather with this workout. 2. 3. 4. 5. How to Get a Bigger Butt.