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Ins and outs 

In preperation for sex with a virgin the male enters the females vagina a few times in order to prepare the vagina for intercourse.
This technique is usually done a month or so before the actual act of sex takes place.
Whether or not this counts as sex is highly debated
Jim: Yea my girlfriend wants to fuck so we have been doing ins and outs
James: Wait so doesn't that mean you've already taken her virginity?
Jim: Yea but dont tell her
Ins and outs by CNM August 20, 2007

Ins and Outs 

Simply, when you are traveling somewhere in a car, on foot, on a bike and you see someone... Maybe a nice car, or someone with silly hair. Then when you are coming home or leaving your destination, you see the same nice car or person with silly hair again.
"Yo, check out that dude smoking a pipe in that silly ass Ford Focus!"
"Alright enough of that, let's get to the mall"
On the way home...
"No shit, there is that same guy smoking that pipe!"
"Ins and Outs man!"
Ins and Outs by EA Sleezy August 25, 2013

the ins and outs 

all the details (of something).
The new employee was eager to learn the ins and outs of operating the complex machinery.

wanted to know the in's and out's of a cows asshole

Wanting to know everything about everything.

A government form

Nosey person enquiring into your business

The VAT inspector
I had to fill in a visa application for Australia the other day. Those mother fuckers wanted to know the in's and out's of a cows asshole!