driving test

The most nerve wracking awkward shiz of your whole life. You must shoulder check every two seconds and have both hands on the wheel, while a smelly person with a clip board critiques your driving in an awkward silence. But sometimes they ask you awkward questions like "So where do you work, or are you a student". to which you reply with a lie because you can't say that you are a student majoring in drinking and ton and masturbation.

to try something out

testing a girl or guy in sex performance before you want to commit to them.

to have sexual relations with an individual with the purpose of gathering information to aid in future decisions regarding with whom to participate in sexual relations with

To engage in sexual intercourse with the sole intention of gaining information to aid with decisions.

Verb;instinct

Test driving a girl means to fuck her with the intent to gather info about her; or to see if she's a "Good Fuck". Which happens before dating.

Or just to make sure that bitch ain't crazy.

borrowing a friends car, and then usuing it to perform a jackass style stunt to see how it plays out, and if it would be safe for your car.