My no-no's would be...

No fecal..... tries to quell the gagging reflex !!! eeeeewwwww

No incest..... and your right in-laws don't count...lol

No kids..... no explanation necessary

No animals.... makes me think germs

No real pain... I like the fine line thing a LOT, but if you cross it I'm gonna beat the daylights outta you........lol

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"Dreaming permits each and every one of us to be quietly and safely insane every night of our lives. " -William Dement