Try this out ! …

but not on your next essay.  I found this a long time ago.  I can’t remember where. 

Owed to a Spell Checker

Eye halve a spelling checker

It came with my pea sea

It plainly marks four my revue

Miss steaks eye kin know sea.

Eye strike a key and type a word

And weight four it two say

Weather eye is wrong oar write

It shows me strait a weigh.

As soon as a mist ache is maid

It nose bee fore two long

And eye can put the error rite

Its rare lea ever wrong.

Eye has run this poem threw it

I am shore your pleased two no

Its letter perfect awl the weigh

My checker tolled me sew.