Surely I am not the only one, right?!
First off you need to mark your shorts. The best way to do this is to fold them in half. Make sure everything matches up like this.
After cutting you can try them on to double check length and make sure they are straight when you put them on.
The last step is to set up your sewing machine with a stretch stitch or a very loose stitch. I chose to use a yellow/gold thread to match the rest of the stitching on the jeans however a dark blue or the color of your denim could work to. On the 3/8 line sew all the way around each leg.
Now you can wash them to remove any leftover marker trim up the edges and you are left with some super cut cut offs that won't fray to your tooshie.
Saving money is the best!