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1.
On the female body, the area of interest that includes the vagina and the anus...both of which may be used for penetration during sexual activity.


or


A derogatory nickname for someone who is a douchebag.
"Hey dude, that chick is hot!"
"Yea man, I'm gonna stick it in her vajanus"


"Matt, why do you have to be such a vajanus and trim all by yourself?!"
by hypemo7 October 23, 2008
 
2.
the {vagina},or {vajayjay}, or {pussy}, and {anal sex} combo. in one session. not to be mistaken with the {dp}
The girl was a slut, she gave me the
VaJanus on the first date.

You never do the VaJanus combo with a bar slut.

I need to wash my VaJanus. it smells like something died.
by drew hew November 26, 2008
 
3.
The combination of Vah-jay-jay and Anus. A conversation way of describing both. Could be used when talking about 'the shocker'. Not to be confused with 'vaganus'.
In a scene from the movie True Romance, Samuel L Jackson and Garry Oldman are talking about eating pussy. Jackson says: " I eat the pussy, I eat the butt, I eat everything." More effeciently, he could have said: " I eat the Vajanus."

(Associated links below)
http://www.youtube.com/watch?v=TcuA22pfAto
by +one January 11, 2009
 
4.
When you see a girl that is so hot, you would have really rough sex with her. You would end up splitting her vagina into her anus, thus merging the two together. This would then create a vajanus.
Roger: Woah man that girl is hot.

Roland: Totally brah, I'd give her a vajanus.

Roger: Nasty. But probably true.
by Lolzenegger October 26, 2014