While standing on a glass/wooden floor,

No, if you are standing on a glass/wooden floor and there is no metallic grounding through the floor, you will not encounter a fatal shock on touching a charged electrical appliance. This is because glass and wood are bad conductors of electricity and hence, current will not be able to pass through the human body down into the ground. Due to this, the electric circuit is not complete and hence, current doesn't flow and no you will not experience any shock.