Someone consistently terrible at gambling. The most common type of Mahoney is someone who bets on sports & loses approximately 80% of his bets. You do not want to have bet on the same side as a Mahoney. Mahoney is interchangeable with Mush. DO NOT take gambling advice from either a Mahoney or a Mush!!!
I felt good about my Falcons bet until I realized the Mahoney also loves them. That's $200 down the drain.
by mikejojo May 23, 2022

Eating a loud crunchy food, such as corn nuts, in the close vicinity of someone trying to concentrate.
by hesKEET May 14, 2006

the action of taking a shit on a girl's chest, directly in the center, which may or may not include smearing it inbetween the titties.
by the juggernaut May 2, 2006

White people. Neither derogetory or complimentary. Why? Well do you know any Black people named Mahoney? 'Nuf said.
by BigBad Wolf June 11, 2006

by nucci888 November 4, 2008

by Kieran Thornton September 19, 2008

Someone who has a very very small penis
by Boi47747373 February 21, 2017
