Anti-Stupidity Forcefield

I'd like to be idiot-proof.
Would it be like the cone of silence?

Would a forcefield slam down between me and the blank-eyed woman at Woolworths, or my ex-husband's workmate who spent the last six months listening to how high maintenance I am, and then put his hand up my shirt the first time I dropped into the pub for a drink after The Man left.

I am going to imagine that shield clanging down like the doors to the batcave every time I'm smiling my insipid journalist smile at some racist stranger, or every time the girl at the supermarket whines 'how was your day?' when you know she really doesn't give a shit...kaching!

I can hear it now...kaching!