nasty shock
nasty surprise

But Helen and the others are in for a nasty surprise.

The next person who opened that door was in for a nasty surprise.

Or what nasty surprises they might have in store for us.

Sometimes you got a nasty surprise instead of giving one.

Now, he thought, we'll see if there are any nasty surprises waiting for us.

And be prepared for a nasty surprise when you see just how much oil comes off on to them.

Bill was closing in on some large nasty surprise out here, something best not thought about.

At her institute you could follow them in private and cover up any nasty surprises, no?

"Then the rebellion is going to be a nasty surprise for him."

"I'm afraid someone may be in for a rather nasty surprise."