What BuzzBallz really do to you: Their distinctive £2.99 bottles litter streets and drinkers claim they 'leave them f*****'. Now ANTONIA HOYLE reveals disturbing truth of drink that's taking over Britain
Some time between midnight and 4am last month - memories are a little hazy - Amy Larkman and her friend fell up the stairs of a Cardiff nightclub. 'Not down, but up,' stresses Amy, 19.