If being raised around Steel Magnolias somehow “turned” people gay, an entire generation of LGBTQ millennials would like a word. Fortunately, Sally Field is more than happy to laugh along with the theory, especially because it came directly from her son.At the time Field filmed the beloved 1989 classic, her youngest son, Sam, was just 6 months old and frequently on set alongside the movie’s now-iconic cast. The actor recently reflected on the ex…