The rain in Spain falls mainly on the plain.
Peter Piper picked a peck of pickled peppers.
Little Bo Peep has lost her sheep at the peep show.
I typed all of this with my eyes closed. It was really easy. Why was it in the form of tongue-twisters? It doesn't really apply to typing, does it?
Eyes open... now. Woo, got it all right! 
_________________
Guns don't kill people, the government does.
~
The final war will be between Pavlov's dog and Schroedinger's cat.
~
Sometimes I've believed as many as six impossible things before breakfast.