Fitzginnons 

Slang for 'a Fitzgibbons'. Rumor has it that a drunkard couldn't pronounce the 'bb' part of the name correctly and the word was coined. Referring to someone as "a Fitzginnons" is meant to insult by assosiation with the original Fitzgibbons, who famously laughed at his students when they left an exam review because he wouldn't give them the answers.

John was a real fitzginnons for not doing the prized athlete's homework for him.

Fitzginnons by somegoof January 17, 2005

Fitzgibbons 

A very genuinely nice and interesting person who listens to what you have to say and is very beautiful

Have you heard of the new girl with the last name Fitzgibbons shes so cool
No not yet

Fitzgibbons by Finesse5082 October 3, 2016