An idea tickled the doctor's brain.

Mr. Godard does not smile much, but this idea tickled him.

The idea tickled them, and they want to see what can be made of it, maybe a cousin of 'Dan's Apartment.'

The idea was tickling at my brain but I thought I was being stupid.

And the idea of blowing away xenos en masse still tickled her pink.

An idea tickled her, the first positive one she'd had in a long time.

The idea tickled him; it led to a better: why blow himself up - alive?

The idea tickled Gregson so much that he laughed until he choked.

The idea clearly tickled the drunk part of Colin Duff's brain.

An idea tickled at the back of his mind.