By City A.M. Comment Desk Every one of us has been on an email chain which is borderline unintelligible for the amount of corporate lingo thrown in there. At City A.M., we’re taking a stand and calling out the worst jargon which travels around the City faster than you can drink an overpriced pint. This week: touch base What does it mean?To make contact with someone, that’s it. There’s an implication of brevity, but regular recipients will understand that this is often an illusion. Who uses it?High energy corpora-jocks who you likely don’t want to be touching anything with. Users can be found l…