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Sweet,loving,funny,and a very good boyfriend.He is usullay very tall and a cute boy. He is flirty with a lot of girls but he’s usually more flirty to his girl. He very athletic. He is also very caring friend. If you find a O’Neill you are a lucky one.
O’Neill by mcscott December 1, 2018
A commonly used named for a janitor or custodian.
Awww shit, the trash needs to be taken out... call in O’neill
o’neill by Nicebutts12 February 28, 2019
Air Force Colonel Jack O'Neill. Goes through the Stargate. Shoots lots of stuff and never runs out of sarcastic remarks.
BAAL: "Do you not know the pain you will suffer for this impudence?"
O'NEILL: "I don't know the meaning of the word...Seriously, impudence. What does that mean?"
o'neill by yo mama July 20, 2003
aka "the o'neill"

the asgard's most technologically advanced ship, designed to fight agaisnt replicators
named after colonel jack o'neill
o'neill by thor December 9, 2003
Zach, stop being an O'neill
O'Neill by colinr November 29, 2004
To do none of the work, but take all the credit.
Did you see Tom as the Board of Directors meeting? He completely pulled an O'Neill on his staff!
O'Neill by Truthful Observer2 December 10, 2012