these are similies i need to know what they mean...explain

1.as blind as a bat

2.as common as dirt

Blind as a bat means that the person can't see (at least without glasses).

As common as dirt means something is everywhere. This expression sometimes implies an insult to a person.

ok thank you

You're welcome.

Sure! I can explain the meanings of these similes for you:

1. "As blind as a bat": This simile is used to describe someone who has very poor eyesight or is unable to see something clearly. It is based on the fact that bats are nocturnal creatures that rely on echolocation (using sound waves to navigate and hunt for prey) rather than their eyesight. Since bats are not commonly associated with good vision, this simile is used to emphasize extreme or complete blindness.

2. "As common as dirt": This simile is used to describe something or someone that is extremely ordinary, ubiquitous, or unremarkable. It draws a parallel between the object or person being referred to and dirt, which is considered to be a common and easily accessible substance found almost everywhere. It implies that the thing being described lacks any special or exceptional qualities and is very commonplace.

To understand the meaning of similes like these, it's helpful to have some background knowledge of the characteristics or behaviors of the things being compared. In this case, knowing that bats have poor eyesight and that dirt is something widely found and considered unremarkable helps you understand the intended meaning behind these similes.