idiotic

Everyone else shifted uncomfortably as this guy continued his derisive laughter and proclaimed my quest the most idiotic thing he'd heard in his life.

If you raise an eyebrow, it can mean "I want to have sex with you", but also "I find that what you just said is completely idiotic."

Forty percent of the workforce are white-collar workers, most of whom have some of the most tedious and idiotic jobs ever concocted.

Indeed, I must have looked idiotic, for all eyes were fixed on me.

What an idiotic mistake!

It's the most idiotic thing I've seen in my life.