Quiero salir de la duda me gustarÃ­a saber que significado tiene carechimba en Colombia
In linguistics, code-switching occurs when a speaker alternates between two or more languages, or language varieties, in the context of a single conversation.peakers form and establish a pidgin language when two or more speakers who do not speak a common language form an intermediate, third language. On the other hand, speakers practice code-switching when they are each fluent in both languages.
Sometimes when you try to send an email you get this  character instead of the @ symbol. This is a keyboard switch that is easily fixed by pressing the Ctrl and Shift keys at the same time. See video for example. Pardon the messey keyboard, it is my workshop computer.