1. Straight and vertical: In an upright position.

2. Physiology firm and rigid: Stiff and swollen as a result of being filled with blood, e.g. when sexually aroused.

3. Right side up: Describes an optically produced image that is right side up and not inverted.

4. To build a structure from basic parts and materials.

5. To fix something in an upright position.

6. To bring an organization, system, or theory into being.

7. To draw or construct a line or figure on a given base.

Lying flat refers to a defeatist lifestyle in Chin, where people stop working, desiring material acquisition, and tap out of any social life – sometimes for good. By lying flat, young people are participating in a kind of non-cooperation movement, rather than surrendering themselves to China's oppressive work culture where they see little hope of social mobility.

When the male organ (penis) is in an upward position normaly when sexually pleased or horny.

When a male’s penis becomes hard which means he’s ready to be sexually pleased

When a girl is hot as fuck, and your dick gets hard as fuck and becomes erect

When your penis goes hard. Erect or erection.

synonym for boner