First, and most basic, it's pretty silly to refer to them as a group.

Now everyone knows where the Prince stands; they'd look pretty silly starting something after that.

I suddenly felt pretty silly standing there without any clothes on.

On reflection it seemed a pretty silly kind of hope, anyway.

Salt was a pretty silly film but i quite enjoyed it.

Often, in private, one thought it a pretty silly instinct.

In other words, this wasn't really worth reporting, because it was a pretty silly rumor.

"I guess that was a pretty silly question," he admitted.

But you must remember that a robot can be a pretty silly mechanism at times.

"Then coming here was a pretty silly thing to do," Kate said.