An n00bsicle, Like a n00b, Newb, Newbie is someone who is less skilled than yourself.

It can also be used to describe someone who behaved immaturely, either in real life, or on the internet.
Example 1 - A person is able to shoot 5 bulls eyes in a row, the next person does not shoot any, they are a n00bsicle as you just owned them

Example 2 - You are playing Battlefield 2, someone runs in front of your plane to affect your score, They become a n00bsicle
by Jason Gunn July 2, 2006
Get the n00bsicle mug.