There was a popping up of heads all over the school-room to get a sight of the picture.
It was her popping up now here and now there like a ghost that locoed me.
I don't want to send for an express-man and find you popping up.
I mean, no popping up through the floor or down the chimney.
Fungi of exquisite yellows and browns were popping up all about the wood.
I know ...