noun: A dude who fucks a chick that his buddy had sex with earlier, generally without said buddy's permission.
Dude, I can't believe Dave did Amanda just a week after she and Ron hooked up. He is such a buddy fucker.
by 51westside June 30, 2011
Military term for someone who does something that makes their coworker’s life more difficult. Related to blue falcon.
by PennyroyalBlack April 17, 2018
A description of one or both individuals in a couple who were at first "just friends." Commonly referred to as "friends with benefits" these indivuals are literally "Buddy Fuckers"
Person1: "Are Kevin and Nichole dating? I thought Nichole was single."
Person2: "Kevin says they're just buddies, but everyone knows he's a Buddy Fucker."
Person2: "Kevin says they're just buddies, but everyone knows he's a Buddy Fucker."
by Rial A. Kidou January 24, 2010
When you literally or metaphorically fuck a friend inadvertently. Always by mistake but seen negatively by others.
Mailman 1: Hey I heard Frank the "buddy fucker" fucked Will out of the leadership position.
Mailman 2: Nah man, Will was just bent over like he always does and Frank accidentally stuck it in.
Mailman 2: Nah man, Will was just bent over like he always does and Frank accidentally stuck it in.
by Paco4u February 15, 2018