"But Rachel also has another hobby, one that makes her a bit different from the other moms in her Texas suburb—not that she talks about it with them. Once a month or so, after she and her husband put the kids to bed, Rachel texts her in-laws—who live just down the street—to make sure they’re home and available in the event of an emergency.
“And then, Rachel takes a generous dose of magic mushrooms, or sometimes MDMA, and—there’s really no other way to say this— spends the next several hours tripping balls.”
I guess there’s a lot of flexibility in the phrase “tripping balls for several hours”.
As ling as you don’t take very small doses a regular shroom trip will usually last several hours