You must allow yourself enough time for unexpected delays. In the real world excused these excuses seldom work. Being late is chronic. Learning to be punctual is also a learned habit. Rule 2 - It has always disgusted me when coaches and parents use foul language in front of children.
Some coaches even brag about the fact that it is a helpful motivational tool.
Children aren't born with foul mouths. These are learned behaviors in childhood that becomes lifestyles in adulthood. Sometimes words do slip out. We are human. But I made a conscious effort to avoid bad language and in my latter years of coaching I never used profanity.