A wild streak refers to a person's tendency towards uncontrolled or reckless behavior, often characterized by impulsiveness and a lack of regard for consequences. Full definition
That shared wild streak is what makes «Beast» so bracing and, up to a point, unpredictable. (npr.org)
Sure, the movie feels a little bit like «The Hangover: The College Years» (it was even written by the same two guys), but despite boasting a similar wild streak, it also features some real heart and life - and - death stakes sandwiched between all the crazy hijinks. (blog.bullz-eye.com)