Low voltage: I flow in conductors and don't flow in isolators.
High voltage: ᴡ̢͕̲͋̀͝ʜ̺̪͍̲̒͌͝ᴇ̫͕̼̲̓͑́ʀ͍̝͎̲͛̐͝ᴇ̳͉̪̲͑͠ ɪ̟̠̼̲͑͆̚s͓̼͉̲͊͋̐ ᴛ͔̟̲̔͊͘ʜ̠͎̲͛͑̓ᴇ͕̞͖̲̈́̀̕ ғ̡͓̝̲͐͘ᴜ̺͍͉̲̐̈́ᴄ͖̞̺̲̓̕̕ᴋ̢͓̘̲͋̚ɪ̟͚̲͑͒̾͜ɴ̳̺̠̲̓͐͘ɢ̠͎̝̲̈́͊̕ ᴡ͔̦͔̲͆͐͘ɪ̟̪̟̲̽͝͝ʀ̝̪̻̲̈́͊̐ᴇ̺̳̲͊̈́̕͜

*insulators, dang it

I like this one

With enough voltage everything is a wire.

@cuddlyogre W̷̨͕̺̪̃͂͗͂̈́̈́̊̽͠͝͝h̶̼̭̔̉̾̇̋̋̿́̓͛̈͋́̔̽͘ê̷̢̦̮̰͎͕̗͕̠̪̦̝̙̚͝ṛ̴̛̙́́̐͛͛̌͂̎̾̎͊͐ě̴̡̙̮͔̞̳͔̜͙̟̮̿͆͛̀͋͒̆́̊̎̚͠͠'̶̡̡̡̢͍̬͈͍͈̰͕̦͔̫̿͋̒̌̋̽̕ͅͅs̷̡̨̡̡̮̥͓̰͖̗̦̼̳͆ ̵̢͙̩̠͓͎̭̿t̴̢̨̛̻̘͖̱͒̿̌̾̅͋̐͑͋̒̏͆̔͑͂͜h̵̙̯͍̪̻̦̥̪͍̗͒͊̽̈́́̄̏͝ͅe̷̡͈͚̯͚̐̐͌̎͊ͅ ̷̡̲̹̗͌̂̋͆̿̿̒̾͆͂́̄̋͗̕ṡ̷͕̝̫̪̳͍̔o̵̝͓̅̏̃̓̂͌͂̽̂̅̑̃̆̄̀̇i̴̡̙̯̽l̴̨̼̟̖͔͖̝̜̱̹͍͔̝̆̈́͐̓͗̀̑̂͆͆͆̎͌͆̀ͅ