1 definition by MOLEMAN48

a word used in frustration when swear words are inappropriate. Originted from mock the week and is used in a wider context by certain students in kings international college

origional students to use NIM at kings:
Maria, Alice, Jack, Solomon, philippa and soofiya
person one- you screwed up on question one
person two- NIM!!
by MOLEMAN48 January 23, 2008
Get the NIM mug.