"Tom, can you ever forgive me for pulling such a dumb stunt?"

Fundamentally this was a dumb stunt, the sort of thing a fourteen-year-old kid would do from his Macintosh.

"I must have been out of my mind to pull a dumb stunt like that," he muttered.

You could have given me a bad time over that dumb stunt we pulled.

The bottom line is, dumb stunts make good publicity.

In the old days she would've lectured anyone to death for pullin' such a dumb stunt.

"Of all the dumb stunts you've pulled, this takes the cake!"

He'll just try some dumb stunt and get killed sooner.

"That was such a dumb stunt she pulled," Cody said sympathetically.

The closest I can come to giving its meaning in this space is "dumb stunt," which will do for a euphemism.