Whats (not) fun is having two laptops and not being able to touch them both at the same time because of some grounding difference. With just one, sometimes I f

Whats (not) fun is having two laptops and not being able to touch them both at the same time because of some grounding difference. With just one, sometimes I feel the electrical vibration. With two, sometimes there is a very uncomfortable zapping sensation in both hands as they each touch a different laptop. It's a bit like if you've ever touched a 9v battery to your tongue, but much stronger.