implies the lack of presence of police or authority figures, usually when something illegal is happening; good to go.
Sarah: The cops just left and won't be back for another hour.
Zack: So straight.
when a certain event or person,is seen as a enjoyable or relaxing, opposite of sketchy
ex. 1- Yo smokin on that beach was so straight
ex. 2- Yo Jack's party was straight as balls