A person who gravitates to a nearby public wall socket to charge a personal data device (tablet, computer, cell phone, etc...) and takes an excessive amount of time to perform the task.
Dude 1:"Hey dude! I called you today but it went straight to vmail."
Dude 2:"Dude! I tried to juice my phone at the local Starbucks but the place was overrun by plug slugs!"
Dude 1:"Total bummer, dude!"
7. September 2014