1. Totally clueless. 2. Willfully and proudly ignorant. 3. Out of touch with reality.
"His entire life, especially in publicoffice, with a record of bad decisions, inability to form coherent unscripted sentences, coupled with that self-satisfied smirk, all prove he's usung a rubber wheel on the third rail."
Doing something extremely stupid or reckless usually for the amusement of others or for the thrill of doing something daring. Often occurs as a result of peer pressure.
The expression originates from the urban myth(?) of someone dancing on the railroad tracks and paying for the foolish mistake with their life.
Dana: Look at Jimmy. He’s dancing on the rails again
Bill: What an idiot! He’ll get hurt if he doesn’t stop it!