Do test it out in your garage!

I believe knowing how to do insulting gestures in foreign language is very much a lifehack. As editor I would not have picked that image though (unless he/she knows and just wanted to make a joke).

Dear SupersonicATX, I do assume you know that many tomatoes contain more MSG per ounce then is advised in the article. Not even to mention many cheeses. Recently a friend of mine was telling me how dangerous MSG was to him while he was eating a parmesan with tomato salad. I had troubles keeping my mouth.