Be Wrong Visibly

...or audibly, as the case may be:

"If you don't know how to pronounce a word, say it loud!
If you don't know how to pronounce a word, say it loud!"
-- William Strunk, Jr. (from TheElementsOfStyle, p.xviii)

Or, phrased slightly differently:

"I make mistakes because I will be learning every day till I die"
-- the Beastie Boys:

How 'bout:

"If you don't know how to rhyme a couplet, just repeat the first line!
If you don't know how to rhyme a couplet, just repeat the first line!"