Buttboobing 

A type of anal sex where the breast is inserted into the anus.

Way hotter than ordinary anal.

Guy1: D00D SHE TTLY BUTTBOOBED ME. IT WUZ HAWT!!!11!
Guy2: I JUST CAME! I AM SO BUTTBOOBING WITH MY GF TOMORROW!

Buttboobing by HiHi Kappa Titans September 26, 2008

buttbonding 

what you get when you don't fart for an uncomfortably long time and then you leak a real flabby one.

tanner unleashed his daily buttbonding and proceeded to be showered with farthate from everybody in the zumba class.

buttbonding by isochronismisms! May 30, 2009

buttbooking 

The act of accidentally posting a nonsense message to Facebook by sitting on your phone.

A typical buttbooking update:

Joe Shmoe: lll,,ll,;;..
2 hours ago via Facebook for BlackBerry

buttbooking by PseudoNoise July 14, 2010