They're mad as hell and they're not going to take it any more!!
The horses, that is.
It shows a horse by the name of RhyJo - we're hazarding a guess that its name may come from the fact that it's made up of someone called Rhys and someone called Jo - invading a branch of Tesco in Wales in a desperate bid to find its family in the frozen food section.
Click play on the video to see what ensues. And then take a look at some of the other shocking ingredients we've discovered in Tesco Value products...