for a man to wear his pants/shorts without any unserwear on

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.

going without underwear

When a guy doesn't wear any boxers OR briefs underneath his pants, he is pulling a "freeball". The balls are free!

When a man has sex without a condom.

the first stage of writing an essay when you throw all of your ideas on paper without having done prior research

1. To wear pants without any under garments.

2. To wing it or put together an idea on the fly.