On Tuesday morning, an Australian pilot took some artistic liberties with his flight path.
The Diamond Star plane, operated by Flight Training Adelaide, spent a little over three hours in the air on Tuesday to draw the letters over South Australia.
The message was not seen by people on the ground, but was visible to aviation followers watching live flight tracking programs and websites.
It is believed the pilot, who was working out of Parafield Airport, north of Adelaide, was "running in" a new engine.
The FlightAware website captured the pilot's work between 8:53am to 11:57am.
The pilot flew several loops, creating some somewhat explicit graffiti along the coast, before tracing "I'm bored" over the Princes Highway.
Retired Qantas A380 pilot Chris Wilson said he thought the message was "harmless".
screenshot by Flightaware via ABC News