A DFU error is when the only issue pertaining to a problem is the user. DFU- Dumb Fucking User
"I forgot the password to my computer can you help me?" "Sure it's just a DFU error ma'am"
Simply means:Don’t Fuck up
Bruhh I’m gonna get that girls number,I bet youYou have to bruh,dfu
da fuck up
girl: all you do is lie boy:dfu