In the 70s and 80s this qualifying adjective was widely used, to designate someone of few principles, creepy, petty. was commonly used during the call : "Movida Madrileña". It is one of those words that is used and spreads like gunpowder, but no one knows what it means, even though it was used for the above described. The "fat" friend who always let himself be invited was a Gualtrapa. Its use would derive from, perhaps, hearing the word : "Gualdrapa" ( Horse Cover) and estimating that it was "Guay" to use it in another way.
