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.