Low Side-To-Side Lunge
If you want to impress your bedtime "friends", you gotta get those legs works. Use these side to side lunges to get that butt bigger, legs thicker (in a good way) and improve your flexibility and stamina for that night time action.
Start in a standing position, spread your legs apart and then shift your weight over one side by bending that knee and keeping the other knee straight. Get yourself low to the ground and make sure your knee doesn't travel over your toes. Shift to the other side smoothly and hold in each position for a second or two before shifting back and forth again.