Final answer:
The phrase "weirdly normal" means that something unusual has become accepted or common.
Step-by-step explanation:
The phrase "weirdly normal" in the sentence means that the behavior being described is unusual or strange, but it has become accepted or common. It suggests that something that would typically be seen as abnormal or out of the ordinary has become a regular part of everyday life.
For example, in the sentence, the author mentions their brother's habit of eating dessert before dinner. This behavior may be considered strange to others, but to the author, it has become something they now see as normal.
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