Don't feel bad because it happens to more guys than you think, I know some of my exes would say they would get one from just me talking to them on the phone. Straying from the point, I know I'm not a guy so I can't exactly relate, but I thought I'd put in my two cents and my best guy friends said that by flexing your calf muscles it will get rid of it. It makes sense though scientifically since the blood flow is moving there rather then in your penis but yeah, hope that works. I wish you all the best!