It's a lot harder for people to complain about something if they've had advance warning about it happening.
 
So, if you're one of those strong, sassy people who likes to keep it honest and sweary, I'd like to recommend to you this patch: It makes sure that everyone knows to get out of your way.
 
This fully embroidered, iron-on fabric patch measures about 8.5cm tall by 7.5cm wide.