A fork of Rural Dictionary
When your cell phone is dying but you don't have the time to sit and wait for it to fully charge so you leave it in there for a little while so that when you take it out of the charger your phone thinks it has a full battery power.
This often leads to your phone losing battery life and eventually dying on you shortly later after a few texts or calls.
Jane: Why didn't you pick up your phone!
John: It's dead.
Jane: But I saw you take it from the charger before you left.
John: I Flash-Charged it for 20 minutes, and after 5 texts it was done.