Pretty well everything Electronic now has some form of inlet filtering which will leak to earth if an earth is present.
Your 2-wire lappie power supplies, LED lamps, wall-warts etc. are designed not to need a functional earth, but inverter A/C, washing machines and of course desktop PCs being Class-1 (metal cased) and requiring a safety earth make use of the better 3-wire filters. All will give you a nip if you "forget" the earth.