A long time ago I typed a pun into my phone, and saved it there. I hoped the idea would incubate into something hilarious, but it's been years now and the yield is nothing.
I find it curious that Google showed ZERO results for the phrase, so I am at least pleased to claim it as my original idea for perpetuity:
"Write what ewe know."
Baa baa people confuse me with goats and shear my wool for textiles. One of us was a clone. Mutton.
See? There's nowhere to go with this. But it's mine!