1) Hangingabout 2) Hanging around 3) Idle 1) Lingering 
Loitering is the act of remaining in a particular public place for a protracted time without an apparent purpose. Under certain circumstances, it is illegal in various jurisdictions. ==Prohibition and history== Loitering may be prohibited by local governments in several countries. Loitering prohibitions are particularly common in the United States...
• (p. pr. & vb. n.) of Loiter
Crime of lingering idly or prowling about on a trail or greenway, especially for the purpose of begging, dealing drugs, or soliciting for prostitution.
A crime best understood as just hanging out.