On Sunday morning, a driver was arrested in California when police officers saw his car weaving across three lanes on Interstate 80 in Berkeley.

In an ironic turn of events, the motorist was taken into custody on suspicion of driving under the influence. What’s ironic? The fact that a big sign warning against drunken driving sat atop his car.

The man was pulled over by the police at around 4 a.m., according to California Highway Patrol Officer Herman Baza. When tested, he was found well above the blood-alcohol limit of 0.08 percent currently allowed in the state.

According to the officer, the sign displayed on the suspect’s car is part of a National Highway Traffic Safety Administration campaign to prevent DUI. The sign read “I should probably get a ride home” (with the word “probably” crossed out) and “Buzzed driving is drunk driving.” The NHTSA pays drivers to display messages like these on their cars.

However, this particular driver did not heed his own advice to take a ride home. “It’s a good message, but he’s not necessarily the best role model. He was weaving all over the place. We caught him early enough that we prevented him from crashing,” officer Baza told KTVU.

California Highway Patrol Oakland decided to make an example out of the drunken driver, so they tweeted a photo of his car carrying the anti-DUI message alongside the dictionary definition of irony and a comment: “Ironic for someone driving drunk with a sign encouraging not to drink & drive. The lad was got by the Irony Gods,” reads the humorous tweet.