Does Anyone Know This Song????

Does Anyone Know The Song
Where Glenn Is Playing The
Piano ANd SInging Along With It???

I Know The First Bit Of The Song
Hehe Umm It Goes
Its 9 O'Clock On A Saturday.
Or SOmething Like That???

Hehe I Know The Guy says It But Whenever That Part Comes On I Forget I wanna Know The Title lOlz

Could SomeOne Please Help????
Coz That Song Makes Me Laugh lOLz

Live Each Day As If There Were No Tomorrow:D