Your dad is a pedophile.
Ice-cream van way back in the day used to sell little cartons of milk with a bit of Blackcurrent Cordial in it!
Are you American?
Surely it's no different than a smoothie? Albeit an extremely milk biased smoothie.
A smoothie is blended fruit, so not really.
He's drinking a pint of milk with a little bit of ribena! Anyone tried this before or is my old man losing the plot?