LOL These are too funny!
Here are some that I can think of -
"Prince of Wails"
"hair day" (with an no smoking symbol)
"MUSH - its what's for dinner"
"Miso cute" with a pic of soup :)
"I have mommy's good looks and daddy's bad gas"
"What, I didn't do it..."
"Food enters here (up arrow), exits here (down arrow)"
"Don't just stand there, HUG ME"
"Don't just stand there, FEED ME"
"Daddy and I agree, Mommy's the boss"
"Mommy's the boss, Daddy just thinks he is"
"Hey, my spit don't stink!"