to try something out

The process of searching a building for an empty bathroom. A successful bowl search typically relieves the frustration of uncomftorably defecating around others, although in less frequent cases the desire to urinate alone is a factor. Bowl searching can be done anywhere although it is most prevelant on college campuses.

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.

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.

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.