A lecture about English
A linguistics professor was lecturing to his English class one day. "In English," he said, "A double negative forms a positive. In some languages, though, such as Russian, a double negative is still a negative. However, there is no language wherein a double positive can form a negative."

A voice from the back of the room piped up, "Yeah, right."

Amazing Anagrams
Amazing Anagrams

Dormitory == Dirty Room

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 Z's

Alec Guinness == Genuine Class

Semolina == Is No Meal

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

This one's amazing: [From Hamlet by Shakespeare]

To be or not to be: that is the question, whether tis nobler in the mind to suffer the slings and arrows of outrageous fortune.

Becomes:

In one of the Bard's best-thought-of tragedies, our insistent hero, Hamlet, queries on two fronts about how life turns rotten.

And the grand finale:

"That's one small step for a man, one giant leap for mankind." -- Neil A. Armstrong

becomes:

A thin man ran; makes a large stride; left planet, pins flag on moon! On to Mars!