La necesidad es la madre de la invención

Spanish: No tenía un abrelatas, así que tuve que usar un cuchillo para abrir la lata. Como dicen, &#039;la necesidad es la madre de la invención&#039;.
English: I didn&#039;t have a can opener, so I had to use a knife to open the can. As they say, &#039;necessity is the mother of invention.&#039;

This phrase is not really a slang, but a proverb. It translates to 'Necessity is the mother of invention.' It means that difficult situations inspire ingenious solutions.