[giardini]

"Might it be related to: https://www.google.com/#q=black+tipping"

When I first read this I thought of

https://en.wikipedia.org/wiki/Cow_tipping

and it took me a moment to recover!

(but read http://modernfarmer.com/2013/09/cow-tipping-myth-or-bullcrap... for a refutation)