Waiter's friend having a handle and a screw that is hinged in the handle and intended to be screwed into the cork of a bottle, wherein - a spring element is provided which is supported on the screw and on the handle in such a manner that the screw can be swung towards the handle into a rest position while tensioning the spring element, characterised in that - on a side wall of the handle, a retaining element is provided which is configured to maintain the screw swung towards the handle against the tension force of the spring element by mechanical engagement with the screw, - an externally accessible releasing means is provided which is operatively connected to the retaining element such that by acting upon the releasing means with a finger, the retaining element is releasable from its mechanical engagement with the screw in order to allow the screw to be swung away from the handle by the spring element, - the retaining element is attached to the handle by an elastically resilient connection such that the mechanical engagement of the retaining element with the screw is releasable while tensioning the resilient connection, - the retaining element has a surface that is arranged at an acute angle to the plane of the folding movement of the screw within the motion range of the screw such that the retaining element can be moved out of the path by the screw sliding on the surface, and - the releasing means projects from the retaining element through the side wall located opposite the retaining element relative to the screw such that the mechanical engagement of the retaining element with the screw is releasable by applying pressure upon the projecting part of the releasing means. - a spring element is provided which is supported on the screw and on the handle in such a manner that the screw can be swung towards the handle into a rest position while tensioning the spring element, characterised in that - on a side wall of the handle, a retaining element is provided which is configured to maintain the screw swung towards the handle against the tension force of the spring element by mechanical engagement with the screw, - an externally accessible releasing means is provided which is operatively connected to the retaining element such that by acting upon the releasing means with a finger, the retaining element is releasable from its mechanical engagement with the screw in order to allow the screw to be swung away from the handle by the spring element, - the retaining element is attached to the handle by an elastically resilient connection such that the mechanical engagement of the retaining element with the screw is releasable while tensioning the resilient connection, - the retaining element has a surface that is arranged at an acute angle to the plane of the folding movement of the screw within the motion range of the screw such that the retaining element can be moved out of the path by the screw sliding on the surface, and - the releasing means projects from the retaining element through the side wall located opposite the retaining element relative to the screw such that the mechanical engagement of the retaining element with the screw is releasable by applying pressure upon the projecting part of the releasing means.