Full Koala 

The act, and sometimes attack move) of jumping on someone's back until the person is forced to the ground.

So I was in photography class and I got full koala'd. It was pretty bad.

Full Koala by alphamaledomination May 6, 2006

Full Koala 

N-The act of performing both anilingus and cunnilingus in one motion, generally with the recipient's legs elevated.

Giving full koalas is a leading cause of bad breath amongst adult film actors.

Full Koala by full koala December 15, 2010