VB.Net Buttons

[omg_lol]

How can i make a button do 1 thing on the first click, then do something else on the second click?

[maclone]

Public Class Form1

    Public again = True

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        If again = True Then
            '/dance
            again = False
        Else
            '/yawn
        End If

    End Sub
End Class