Definition: Script Kiddie
From Webopedia
A person, normally someone who is not technologically sophisticated, who randomly seeks out a specific weakness over the Internet in order to gain root access to a system without really understanding what it is s/he is exploiting because the weakness was discovered by someone else. A script kiddie is not looking to target specific information or a specific company but rather uses knowledge of a vulnerability to scan the entire Internet for a victim that possesses that vulnerability.
From Urban Dictionary
A True Fool. One to be looked down upon. They tend to use leet speak, but dont realize its true significance. They are usually 10-14 year old kids (or so) who think they are "1337 |-|4x0r5", but are really just trying to be cool.
They call themselves hackers (which is not the same as a cracker, a hacker is a programmer, a cracker is a person who breaks into computers), while they are neither hackers or crackers.
They use other peoples programs to do their simple "hacking", and usually end up getting caught.
Hackers are really cool people. Script kiddies are morons.
Hacker: I just wrote my 30th module for the Linux kernel! Linus Torvalds emails me every day, he loves my code!
Cracker: I just broke into the CIA's webpage and replaced all occurances of the president's name with "Mr. Dumbass", It's funny as hell!
Script Kiddie: j0, ph00! I ju57 stolezored me a b0rkified wind0ze 3.1 b0xor. It r0x0rz my s0x0rz. I wundr if it g0tz Linux on it? Whutz Linux anywayz?
From Wiktionary
1. (derogatory) A (usually amateur) hacker who compromises files on others' computers or launches attacks on computer systems, using widely distributed
computer programs or scripts, rather than using their own unique programs or scripts.