The Harry Reser version uses a different melody:

On Monday, she takes a walk with Johnny
On Tuesday, she has a talk with Jim
On Wednesday, she likes to dance with Tommy
On Thursday, she takes a chance with Tim

On Friday she goes to dine with Billy
On Saturday it's Percy that buys
Sunday's my only time
With that bozo of mine
'Cause she's the Sweetheart of Six Other Guys!