Back in the day, Sinbad-the comedian-had a short lived sitcom. The only episode that I can recall is one where there was a highclass dinner party that was attended by high-class, wealthy African-Americans. At the party the guests were nibbling on watercress and cucumber sandwiches. This put Sinbad over the edge and he Yelled "BLACK FOLKS GOTTA HAVE MEAT!!!!".

So I think that watercress sandwiches causes agressive behavior .

Black57