Bunny Tailing 

Sticking the pinky finger up someone's arse whilst making a fist with the remaing fingers.

bunny tailing entails the above

Bunny Tailing by mcsmee September 29, 2009

Bunnytailing 

Verb: When a man goes balls deep in Woman's (or Man's) ass. His balls create the illusion of a rabbit tail on the person he's fucking.

I'm going to bunnytail her. ;
Wow, that's some incredible Bunnytailing!

Bunnytailing by SaxyAF October 26, 2017

Bunnytailing 

The act of wanting to fuck a woman with another man's dick.

I often find myself bunnytailing about J-Lo in the back of the tour bus.

Bunnytailing by Reverend Holden McGroin August 25, 2010