The concept of filth it is used in the colloquial language in various ways The term may refer to the garbage or the waste .
For example: "The beach is full of crap, the authorities should do something to combat pollution", "I don't like my son playing in the square surrounded by the crap that people throw", "I can't believe there's so much crap floating in the lake".
The notion of crap is also used to refer to scarce objects value and to those who are broken or are very old and, therefore, they do not work correctly: "I will not spend much for his birthday, I will buy some crap", "This machine is crap, I need to replace it with a more modern one", "Before I go on a trip I will have to take this crap to the mechanic shop".
A food unhealthy and something that not pleasant or satisfactory , meanwhile, it can be mentioned as crap: “Since I don't like to cook, I spend eating crap that I buy in the street”, "The new album of the German band seemed like crap", “I try that my teenage son has lunch at home so he doesn't consume so many crap”.
It is also named as crap to a action dishonest , rude or immoral : “I got mad at my cousin because he made me crap”, "I do not want crap in the company", "Go with your crap somewhere else, here we are honest people".
The negative connotation of crap can be seen clearly in tango "Swap" , written by Enrique Santos Discépolo . Your letter starts like this: “That the world was and will be crap, I know, / in 506 and in 2000 too”. To justify this allusion to the "filth", then comment on lack of morals what's in the society .