Dormitory - Dirty Room

Mother-in-law - Woman Hitler

Desperation - A Rope Ends It

The Morse Code - Here Come Dots

Slot Machines - Cash Lost in 'em

Animosity - Is No Amity

Snooze Alarms Alas! - No More Zs

Alec Guinness - Genuine Class

Semolina - Is No Meal

Evangelist - Evil's Agent

The Public Art Galleries - Large Picture Halls, I Bet

A Decimal Point - I'm a Dot in Place

The Earthquakes - That Queer Shake

Eleven plus two - Twelve plus one

Contradiction - Accord not in it

George Bush - He bugs Gore

and my favorite:
President Clinton, of the USA - To copulate, he finds interns