What is a tuple?

A tuple is an ordered list of elements. It means it accepts one or more arguments of any type. Tuple is written as three dots (...) in Lua.

-- param: tuple ...
function foo(...)
  print(...)
end

foo(1,2,3)
> prints '1, 2, 3'
foo("Hi,", " there!")
> prints 'Hi, there!'

------

function bar(...)
  args = {...}
  script.Parent.Name = args[1]
  script.Parent.BrickColor = args[2]
end

bar("Blue Brick", BrickColor.Blue())
> Changes the name to Blue Brick and it's color to Bright blue.

As you see, it's quite up to you how you use it. It's common to assign the tuple in a table in the function to easier handle it throughout the script.