When Creationists say we believe God created the heavens and the earth in 6 days, every single person on the planet understands what that means. We don't have to clarify, we don't have to point to other things we've said that might shed a little light on it, all we have to do is affirm that we believe God created the heavens and the earth in 6 days, and you know what we mean. The Bible is a lot more clear on this topic than we are. We obviously have the added benefit of being able to converse, whereas the Bible remains static, but based entirely on what the text says, the conclusion that God created the heavens and the earth in 6 days is inescapable.
Tragically, there are a number of Christians in the world who wish to reinterpret the Bible on this issue in order to fit the way of the world. To them, it's not a matter of disagreeing with God, it's a matter of holding a different interpretation of the Bible. However, this interpretation is so extreme that it would render the entire Bible completely meaningless.
For one thing, if such Christians want to argue that the 6 days were not 6 literal days, they must come up with an alternative meaning for it. It cannot be disputed that the Bible has a very specific set of purposes. It makes us wise for salvation (2 Tim. 3:15), it is useful for doctrine, for reproof, for correction, for instruction in righteousness (v16), it completes the man of God and equips us for every good work (v17), and most relevant to today's topic, it gives understanding to the simple (Psalm 119:130). All of this, and all the things I have left out, tell us that the Bible is not some sort of secret code that can only be understood by those who spend a lot of time hoovering up revamped pagan myths from atheists. Rather, it is designed so that everyone who is capable of reading it is capable of understanding it, at least to a certain extent.
But according to OECs, the entire concept of language just dissipates whenever it results in questioning the theories propagated by Darwin, Lyell and the like. When the Bible says Jesus rose from the dead on the third day, that's easy. When the Bible says Jonah was in the whale for 3 days, that's not difficult. But when the Bible says that in 6 days the Lord created the heavens and the earth (which it literally says verbatim in Exodus 20:11), suddenly we don't know what that means? Suddenly, God just forgot He was talking to humans and decided to throw in something we wouldn't understand until atheists hijacked science 3,400 years later?
When Creationists defend our view, we can do so with nothing more than what the Bible says. We can beef that up with all the scholars who virtually unanimously agree the Bible means 6 days, or by pointing to the fact that virtually everyone else also agreed until Darwin's day, but that's all it is: Beefing it up. We don't need all that, we can just read the Bible out loud. But OECs have to say, without any evidence from within the text, or from any known rule of any known language, that this particular part of the Bible was not intended to be taken literally. This, in itself, is an admission that this is what the text actually says. Taken as it is written, the Bible obviously says the heavens and the earth were created in 6 days. Thus, however much OECs may hate when this is pointed out, they are practising eisegesis. They have a pre-determined view and are trying to cram it into the Bible, rather than taking the Bible as it is written and basing their opinions on that. This is not a case of simply interpreting the Bible differently. This is a case of interpreting the Bible wrong! This really is a case of man's word vs. God's word. For the so-called "young" earth Creationists, God's word wins.