BARCELONA -- Mobile World Congress -- I heard some pretty funny stuff this week in Barcelona (mostly after 10pm, it should be noted) but I missed what sounded like the best gag of the week.And it was delivered by John Chambers.Yes, that John Chambers, the CEO of Cisco Systems Inc..According to reliable sources, Chambers concluded a presentation to industry analysts earlier this week by announcing that he was about to indulge in his most enjoyable Mobile World Congress activity – visiting the Huawei Technologies Co. Ltd. exhibit and having a lengthy wander around. "It freaks them out," he reportedly said (or words to that effect).It's not known whether he followed that up with "And I'll be here all week, folks…"— Ray Le Maistre, International Managing Editor, Light Reading