"I'm smarter than you. You don't even know what ten times twenty is! Ha, ha, ha" says the eight year old.
A moment passes. The five year old comes to me, whispering in my ear, "mommy, what's ten times twenty?"
She yells upstairs, "I do too know what it is, because I AM smart. It's 200. Ha, ha, ha"
"mommy told you"
"nuh uh, I'm smart."
"then fine, what's ten times forty?"
"400," I whisper
"I heard you, mom, you cheater!"