Non credo esista niente di quello che tu chiedi, prova così:
codice:
    Private array_array1() As String = {"lalala", "lalalala"}
    Private array_array2() As String = {"papapa", "papapapa", "cucucu"}
    Private array_array() As Array = {array_array1, array_array2}

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim ars As Array
        Dim i As Integer
        Dim j As Integer

        For i = 0 To array_array.Length - 1
            ars = array_array(i)

            For j = 0 To UBound(ars)
                Console.WriteLine(ars(j))
            Next
        Next
    End Sub