Payback?

Punishment was tossed on me for being such a slacker today. It has rained all day, so I became a hermit and just slept a lot and watched bad TV. I jumped up off the bed ( and yes, I always jump off the bed) and heard/felt something pop between my shoulder and neck. O my gosh! The pain was monumental and I could barely move my neck and arm. Since then I have managed to take some aspirins and lie on a heating pad and the pain is not as intense now, but, WOW, that really hurt and for no apparent reason. How does one explain to others when they ask what happened? I think I'll just stay home so I won't see anyone to have to explain what a dork I am.