A term that can be used to describe a relationship that is not official (without a title) but you and your significant other aren't seeing anyone else.
Sarah: Hey Lisa whats going on with you and Fred..?
Lisa: Well I like him and he likes me but were not ready to make it official so were just bunning. ;)
Lisa: Well I like him and he likes me but were not ready to make it official so were just bunning. ;)
by botscutie April 28, 2009
Get the Bunningmug. If you just got Bunned, it means you've been MEGA-PWNED by sum l33t mofux0r hax0r!!!! PH34R!?!?!?111!111one!11
by Cold0ne January 12, 2004
Get the Bunnedmug. The sweetest mother fucker you will ever meet in your whole life. if you havent met the bun yet you better get the nerve to walk up to them and say "hey your kind of cute" and walk away with pride and know that you just shook hands with a fucking beast.
person1:"Did you just talk to the bun?!"
person2:"Omg yes and she's the most awesome person I've ever met!"
person2:"Omg yes and she's the most awesome person I've ever met!"
by baller40 June 3, 2009
Get the The bunmug. 
by Unknown May 26, 2004
Get the Bun bunsmug. Similar to Definition 4 except for the fact that it is usually done between two males in which one vigorously Slides his penis in and out of another males ass crack until ejaculation. Various forms include the "Bunn(sin) Burner" in which hot sauce is used to lubricate the crack.
Kyle and Waldo had became bored with the traditional means of "Bunning" and decided to spice things up and try the "Bunn(sin) Burner" The two invited Big Mike as long as he brought the hot sauce.
by Runnin&Bunnin November 9, 2013
Get the Bunningmug.