You know, like as opposed to that cheap generic stuff.
The phrase is used in a WSJ story about parents giving kids vitamins unnecessarily. Sometimes, the effects are harmless. But mostly, overdoing vitamins is just a waste:
Absorbing a bit too much of some nutrients, like the B vitamins, just results in “expensive urine,” because the excess is excreted, says Kathi Kemper, a pediatrician at Wake Forest University Baptist Medical Center.
By taking vitamins that you or your children don’t need, you are literally—excuse the phrase—pissing money away.
How Vitamins Can Be a Waste of Money