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you see someone online on Facebook Chat, you click them, and they're gone. You're left with blue balls because you thought you'd get some action, but now you're just sad and confused
I clicked on my ex, and they were offline. My heart broke. Blue balls, man.
I saw my crush was online, clicked them, and they were gone. Blue balls hit me like a ton of bricks.
I was about to text my friend, but they were offline. Blue balls, baby.