four o'clock
`` I 'm all ready , '' he beamed . `` Come on , Bobby . '' `` You ca n't take that kiddie car , '' announced Bobby firmly . `` Mother said this letter was to go in the four o'clock mail and we 've got to hurry . If you and Dot want to go , you 'll have to walk fast . '' Twaddles usually minded Bobby . He promptly surrendered the kiddie car and continued to smile pleasantly .