Does anyone know what its called when you ingest pills not prescribed to you for a high?

What you've described is sort of the little known addendum to Darwin's Law. When a species has produced too much offspring, it is natural for there to be an extremely high number of those with low intellegence. In order to preserve the intelligence and survival of the species, nature has a way of weeding out those of lower intellect before they have a chance to procreate. And so ... "pill parties"