In case this doesn’t translate outside of AU, a tosser (beyond someone throwing rubbish) is a “wanker”, a tool, an idiot.
There have been road safety signs along the same lines using w(anchor symbol) and a rooster (cock). Trying to market to punch through male bravado I guess.
Speaking as someone who's lived in Texas since late in the last millenium, that sounds awesome, and similarly well-calibrated to work on the target audience.
