Non-PRO English Other General / Conversation / Greetings / Letters

Dear colleagues,
I’m not sure about the meaning of “lousy rotten” referred to a kid... I understand the single words, but I was wondering whether they may have a slightly different meaning in this context.
In the passages below, the author is describing his childhood and his parents’ behavior. I don’t know whether it might mean something along the lines of “mischievous pampered child”...but I suspect it may be too weak..
Thank you so much for your suggestions!

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Here is the first occurence (towards the end of the passage):

I can see that in my family of origin I was overwhelmed and deeply shamed by the repetitive outbursts of my frustrated mother, who – unable to manage her own anxieties and also respond to the challenges of parenting a precocious child – turned to gross shaming as a solution to clear any threats to her stability and to establish her dominance. Having been conscious in adult contexts for this activity in my mother, I can still see with my mind’s eye the sneer of contempt, as in “How could you be so stupid?” or “Who would do such a thing?” or *** “You lousy rotten kid,” *** in moments when she was not her usual loving self and lapsed into self-protective modes of living.

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Here is the second occurence: (towards the end of the passage)

My father’s early outbursts toward me were so shameful for him, I believe, that he resorted to having me write endless repetitive behavioral admonitions: “I will not hit my sister” was a typical one. I can still remember his fury when he found me writing the first 50 lines in a column of “I,” followed by a column of “will,” and so on. What child has not done this? On the other hand, I had already learned about the violence in him that he squashed and was reinforced by my mother’s shaming. I could feel it in the way he steeled himself in holding back his rage as he instructed me on what he wanted me to do for punishment. This was, I imagine, confirmation of the alien-self construct in me.
My alien self has been the child who knows he is bad, shameful, defective, *** a lousy rotten kid ***, and was required to be nice to everybody, especially girls, and had to compensate for all this by being a good, good boy. I think of this as a tyranny of niceness.