2
(Noun): the bonus anal sex you give your man after he's been extra good to you. Combination of bonus and anus as well as boner and anus.
Guy- "I was so good to her this week she gave me some surprise bonanus"

Girl- "if he wants anal from me he's gonna have to earn it. Get some bonanus"
by ThatWasTheWorst May 26, 2018
Get the mug
Get a Bonanus mug for your dad Callisto.
3
Bo-na-nus, (n.) - The boner that pokes through the anus. (See picture of Tyrannosaurus Rex skeleton for example)
My bonanus was poking through my cheeks at the gym last night.
by Futuremaestro March 18, 2019
Get the mug
Get a Bonanus mug for your daughter Beatrix.