Probably almost all those who have spent a season in the United Kingdom or Ireland will know this useful and simple trick to use the three-slot plugs which are used in these countries without the need to buy an adapter.
If you travel to a country of Anglo-Saxon influence and do not have an adapter to connect to the network any device you bring from home; Whether it's the laptop, the shaver or the dryer, you can easily do it using a pen or any sharp-shaped device.
The earth connections in countries such as the United Kingdom, Cyprus, Ireland or Malta have a third protective hole that prevents the outflow of current in the two usual sockets. The plugs have a third socket slightly more elongated that once inserted allows the two slots to be opened so that the plug can be incorporated into the ground.
That is, simply open the gate with a pen or keys, you will see how the other two slots are exposed and, while holding the pen in the same position, you can easily connect your two-socket plug without any problem.
Disclaimer: Although fortunately it never happened to me after using the pen for three years in Ireland, apparently the abuse of this practice can end up spoiling the plugs.2.303