The blue balls blues is what when you forget your protection, boys. Because then you can not score, and that'll hurt. Take it away Rusty and Vern, sing us the blue balls blues.
A very different reminder to bring a condom. Like Metro in Australia "dumb ways to die" the message is brought to you by a humorous song and animation. And the risk shown is different, blue balls, man. Forget unwanted pregnancies and STD's. If you don't bring a raincoat, it will not rain. What does that even mean? I have no idea.