Actually, there are a number of meanings and your post can be taken a number of ways. Looking at what sinister and evil mean to others shows how that word may not have been what you meant. Then again, my complaining about your ability to communicate opens the door to your complaints about my attempts at humor.
I take it all back.
No doubt; people make up additional meanings to words all the time. My usage happens to be the meaning you'll find in a dictionary that the word has had for hundreds of years.
Looking at what sinister and evil mean to others shows how that word may not have been what you meant.
I used the word sinister because that is exactly the meaning I intended. From the first definition in your link "threatening or portending evil, harm, or trouble; ominous".
Then again, my complaining about your ability to communicate opens the door to your complaints about my attempts at humor.
When I use a word intending the meaning expressed in a dictionary, and you claim some other unrelated meaning ("satanic"), I would suggest to you that I am not the one lacking in communications skills. But perhaps I simply lack an appropriate appreciation of your non sequitur humor; if you or someone else found your post funny, then I suppose it served its purpose and I'm glad I could contribute to making your day a bit brighter.