"Daddy," my son pleads, "Mommy says I don't need to change my underwear when I showered last night."
"You didn't shower last night."
"Yes I did!"
"No you didn't. You showered the night before. Change. Your. Underwear. Now."
"But Daddy, I don't..."
"If you don't change your underwear right now I won't tell you who won the World Series game last night."