Johnson said that having the "TIPSY" plate "doesn't mean I drink and drive. It just means I have a good time." No, the fact that you drink and drive means you drink and drive. The plate just means you're stupid.
Johnson insisted that he had bought the license plate not to show that he drinks but rather express his feelings about how his SUV rides (it's "tipsy," get it?) thus confirming the stupid hypothesis by admitting that he drives a vehicle that he personally believes to be dangerous.
Also confirming the stupid hypothesis, Johnson told reporters "I feel really stupid."
Thanks to Lisa Lukaszewski for alerting me to this.