What's The Deal With Ronnie's Drunk Mother?

What was even weirder about the incident was that the only one who seemed surprised or freaked out by the whole thing was Deena. But I’m wondering if that’s because Deena is new to the cast, thus new to what is considered a common occurrence to everyone else. Did you notice how JWoww nodded and gave the international hand signal for “wasted”? Also, when Ronnie got home and finally talked to his mother, he didn’t seem horrified or confused, as most people would be, but instead calmly tried to get the situation under control. It makes me think back to the first episode of this season when fighting with Sammi and Ron, Snooki yelled that Ron’s mom calls her everyday and complains about how Sam is a bitch. Snooki later admitted that she “embellished” this, but pointed out that Ron didn’t saying anything to dispute it. Initially everyone thought that this was proof that Ronnie’s mom doesn’t actually like Sam, when really, it might be proof that she regularly harasses the Jersey Shore cast when she’s drunk.