Col. Everson's mouth popped open as though he wanted to ask something but he nevertheless said nothing.
Laurie's mouth popped open again, then he fell over backward and groaned.
When the tension got to a certain point his mouth would pop open, and in a moment close, and it would start over again.
The baby, knowing only too well what should be done to sugar-plums, opened its mouth wide and the Master's daughter popped it in.
Numb the mouth with ice chips or flavored ice pops.
Two eyes opened, bright pink disks; then the tiny mouth popped moistly open under the waving trunk.
The secretary's mouth and eyes popped wide.
His eyes were wide, his little mouth popped into a perfect O of outrage.
Jericho's mouth popped open in startled disappointment before he hurriedly retreated out of the way.
His belly rose as he breathed, and his mouth popped open, a circle of darkness.