Among the things that endeared him to his public was his comic use of language in his films; his characters (all of which were really variations of the main "Cantinflas" persona but cast in different social roles and circumstances) would strike up a normal conversation and then complicate it to the point where no one understood what they were talking about. The Cantinflas character was particularly adept at obfuscating the conversation when he owed somebody money, was courting an attractive young woman, or was trying to talk his way out of trouble with authorities, whom he managed to humiliate without their even being able to tell. This manner of talking became known as Cantinflear, and it became common parlance for Spanish speakers to say "¡estás cantinfleando!" (loosely translated as you're pulling a "Cantinflas!" or you're "Cantinflassing!") whenever someone became hard to understand in conversation.
Similar to doubletalk, technobabble, and other varieties of speech.