To rub your chin thoughtfully.
John was taken aback by the sudden turn of events. He knew that if his decision was too swift, he could condemn
of many. Slowly, he sat back and began to chinserbate while he deliberated his next move.
Deep in thought, Susan was an avid chinserbater. One hardly could catch her with
her hands anywhere else!
I caught him chinserbating in the study, his dark eyes
awash with possibilities
and hope as he studied the map before him.