They sent 'posthaste' for the doctor. = They sent for the doctor 'posthaste'.
(..) but you should go back to school. Now, this is great news, Runks. Put your limp dick away, get in your girly car, and drive up to Stu's posthaste. You got to put an end to this shit. You'll thank me later. You are welcome. She probably already fucked him, Hank... - twice, three times. (..)2014 TvShow: Californication Title: Grace Season: 7 Episode 12