Ten minutes is short if it's a recess and long if it's a punishment.
Hitting the kid with the ball might get you the ball, but it won't get you anyone to throw it to.
One thing you can't pretend to be is funny.
Don't expect a stranger to wipe your nose.
Look at the footprints you've made.
As soon as you understand 2 x 4 you can't believe there was a time when you didn't understand it.