A driver offered police an honest explanation after being clocked travelling at more than 30km/h over the speed limit in Karnup.
A Twitter post from police said the man was caught doing 135km/h in a 100km/h zone along Mandurah Road just before 3pm yesterday.
When the Holden driver was asked to explain his reckless driving, he replied: “Just being a d***.”
Police say that's no excuse for speeding.
The driver copped an $800 fine and six demerit points.