Yeah it is far easier to induce an idea into someone, even unwillingly, than it is to willingly forget about one. E.G. "Whatever you do, don't think of elephants"

Rather than focusing on a perfect defense and never letting language get misused, it'd be more effective to go on the offense and just continually introduce the idea that people who do twist words like that deserve the gift of a few surprise free tooth extractions. If that spreads far enough as a meme we'll have fewer repeat offenders