rules about tools

my step dad always says that there is a proper tool for every job and today i disobeyed this logic and the rule that states, "do not cut towards yourself" and cut my thumb with a serrated knife, which was because i was lazy and figured it meant less dishes if i just used one knife. not smart at all. but nothing a band aid can't handle. is just reminded me that sometimes your parents do know best and that pots' handles should not hang off the edge of the stove, you should never hand someone scissors with the pointy end out, and you should ALWAYS CUT AWAY FROM YOU.