Over the years, I've found that there are plenty of words that you can prepend or append to a phrase, that change it drastically from an innocent phrase, to something more nefarious. You don't even have to be the one saying it. You can simply state the appended word when someone else is done saying what they wanted. Besides being good fun, it's a good way to really upset someone who's trying to portray their innocence in a situation.
"... any more."
"... today." (this week, this month, etc)
"... that you know of."
Feel free to add your favorites in the comments.