body: Legally speaking (legal consequences), is it wrong to spike someone's drink? No dangerous or health-threatening substances, just a very mild pill that gives beneficial insomnia-curing effects.
  
  
  Also, is there anything wrong with spiking your own drink? (And someone else came along and drank from your cup, of her own accord.)
  
  
  
title: Is it an offence to spike someone's drink?