手潮是怎么来的

Today I drive my baby and wife to infants' school.after that , return the car to my wife and go to work by bus. when I arrived in company.the phone ring.It is my wife.She said :"funny,When I drive car from your hand ,I found the wheel is wet." I said :"It is my sweet.you know ,It is nervous for me to drive . so you understand the meaning of the work 'wet hand '". yes, for me .driving is not a easy thing .must do more practice.