drowning in the baby pool

To spend time wallowing in misery over trivial, materialistic, and superficial matters. The baby pool is never deep.

Casandra: What's wrong with Belinda? I texted her and she sent back all tearful emoji's.
Carrie: She saw that Brenda posted about her new finery shoes and that Brenda got more likes than she did when she posted about her new sandals.
Cassandra: So she's drowning in the baby pool again? I should have known. Just for that I'm liking Brenda's shoes!!!