Flying on a small regional jet on a ~600 mile Delta Connection flight, a couple boards and sits in 1C and 1D immediately ask for two rum & Cokes. A few minutes later, flight attendant informs 1D that her purse will need to be stowed for takeoff as it's a bulkhead row. 1D insists that she can't be separated from her purse as it's a very expensive bag and she has a lot of anxiety. FA explains it's a federal regulation. 1D begins to rant, calling both the FA and Delta expletives, and saying this is why she's never flying commercial again, it's all private from here on out. FA asks 1C & 1D for their half finished drinks prior to takeoff and 1D again verbally assaults FA. The whole time, 1C is quietly uttering to 1D, "it's okay, it's okay, it's okay," knowing this behavior might get them both kicked off. Still prior to departure, 1D fully reclines and puts both feet up on the bulkhead. FA sternly informs 1D she needs to put her seat back upright for takeoff, and he'll call security if necessary. 1D mockingly says, "yes sir, what else can I do for you sir?" and sits upright. Throughout her ranting, 1D repeatedly said that she didn't care if they kicked her off the flight. Honestly, I'm not sure why they didn't.