You shouldn't let your kids go places without your permission.
Sally's 13 year old is asking her to sign a permission slip for school.
Sally wants to get her nails done today.
Sally signs the slip right away then heads out to get  her nails done.
Sally ignores her child and goes out to get her nails done.
Sally's child has permission to go on the trip and has a fun day.
Sally's child forges her moms signature her teacher finds out and bans her from the trip.