That dumbass idea ruined our whole trip.

I felt like a complete dumbass when I realized I had mailed the report to the wrong client.

Don't be such dumbasses and read the instructions before you start.

His dumbassed idea to jump the fence ended with him in the hospital.

Her dumbassity was on full display when she locked her keys in the car twice in one week.

In the heat of the argument, he declared himself the dumbassest person in the room, which only made everyone more uncomfortable.

After three reckless pranks in a row, his friends joked that he'd achieved a new level of dumbassdom.

After two failed attempts to fix the sink, I had to laugh at my own dumbasshood.

After all that dumbassery, she decided it was time to grow up and face the consequences.