I'm surprised nobody has mentioned what an invasion of privacy this is......

Your sister has a highly personal video, and you are considering making a copy of it for your own perving?

Depending on the relationship you have with your sister, you can talk about it if you feel comfortable doing that - and she might let you have a copy, whatever. If you have permission, then no there's nothing wrong with it. And there's nothing wrong with masturbating over your sister or finding her attractive.... provided it doesn't go much further than that.

But if you can't talk to her about it, or she doesn't give you permission to make a copy of it - then put it make where you found it, and forget you ever saw it.

But first send me a copy too

CasperTG

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You know, Blackadder, for me socks are like sex. Tons of it about and I never seem to get any.

My Photos:
https://imgur.com/a/80hiRdm