a person (typically young) devoid of hacking skills who copies code and techniques from adept hackers and wrongfully boasts about their awesomeness.
to be hacked and told about it by the attacking packet-monkey who generally calls you and your mother names while associating himself with your mother in an erotic fashion.
Guy 1: "Hey man, how would I go about hacking into my girlfriends Facebook account?"
Guy 2: "Umm, don't be such a packet-monkey?"
Guy 1: "What da fuck you just call me!?"
Guy 2: "Oh, no, no, I said 'packet-monkey.' It's a term for hackers that suck."
Guy 1: "Say that shit again you'll be missin' teeth.
Guy 2: "God DAMN IT! This fucking packet-monkey won't stop messaging me about my mom..."
*Guy 1 punches Guy 2 in the teeth*
Guy 1: "WHAT I SAY, BITCH!?"