It is what it says on the tin you knob!!!
Its a walking stick, but instead of holding it as you would do with any other conventional stick, you hold it between your thumb and forefinger, with your thumb cradled within the U.
Not really any special purpose for the stick just down to personal preference i suppose.
well get a spaz chariot then and stop trying to be ill with your limp and never mind what it says on the tin,,,,,,,,,,,,,,,,,is says thumbstick, not walk-stick,,,,,,,,,,,,,and i'll KNOB you