The 19-year-old man emerged from his abode in Chalong, southern Phuket, about 9am. Apparently, he needed more sleep.
The council grass-cutter had just begun work when the Australian came out to confront him, said police at Chalong.
The young man's request was simple. ''Stop! I want to sleep,'' he told the worker, waving the handgun.
The worker contacted his boss who raised the issue with the Mayor of Chalong who ended up escorting the Australian to the local police station.
There, it was established that the handgun was a fake and could not fire. Officers fined him 1000 baht.
It wasn't clear whether the young Australian went back to sleep, or the council grass-cutter returned to work.