Originated from Nefstro, the original stro. Stro refers to anything that involves a gangsta lifestyle and doing shitty things; although stro is subject to many different adaptations in its definition. It can also be added to the end of people's names to infer that they are a stro themselves.
Streaks shit his pants therefore we sometimes call him Streakstro. Yo Chief! Quit being a fucking stro!
Dude, toss me that stro.