Drugstore cowboy, e.g.
Else clues• Aimless sort
• Drugstore cowboy
• Hanger-out
• Laggard
• Loafer
• One hanging around
• One just hanging out
• One lingering aimlessly
• One who hates to act
• One who may be arrested for doing nothing
• One with no place to go, apparently
• Potential troublemaker
• Shopkeeper's annoyance
• Stage-door Johnny
• Vagrant
• Someone who lingers aimlessly in or about a place