"Warning: ?Blood Msg? ..."

So I recently found this message in Dark Souls. It was definitely left by a player, since it doesn't have the developer message icon, yet it does not follow the available options when using an orange guidance soapstone.
I have also seen: "Try: Wings" and might have missed a handful others that don't match any template. What happened here?
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Note that I'm playing the German Version, so the screen actually reads: "Achtung: ?BloodMsg? ..."
Best Answer
If the message does not match ones you can create yourself, it was placed by a a cheater.
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Message man. Warning:blood/gore.
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