This is my code.

```html
<!DOCTYPE html>
<html>
<body>
<span id="demo"></span>
<span>-</span>
<span id="demo2"></span>
<script>
var words = ["Word", "Another Word", "One last word"];
var wordsLast = ["Suffix", "more", "and more"]
function textMasher() = {
document.getElementById("demo").innerHTML = neem[Math.round(Math.random()*2)];
document.getElementById("demo2").innerHTML = neemLast[Math.round(Math.random()*2)];
}

</script>
<button type = "button" onclick =  textMasher()>sample text</button>
</body>
</html>
```

If i just remove the function, it runs without error.
I've tried making the function include the list declarations, and put the button above and below the script tags.