Use scissors to cut the straw to an appropriate length. I made mine a bit less than 2 inches.
Step 2: Cut The Straw Lengthwise
Use the scissors to cut the straw segment lengthwise so you will be able to open it up and put it around the cord.
Step 3: Place The Cord Inside The Straw
Open the straw at the lengthwise cut and slide the cord inside. Move the straw down to the jack end to support it and prevent it from bending so much.
This is not a perfect or permanent fix for a bent cord, but it might help you through a cord crisis someday. It's cheap and easy.