Moms have some tricks handling their children...
Their arsenal includes carrot and sticks, persuasion, any kind of blackmail (involving sweets, movies, late parties, new clothes, concerts, etc.), stirring to pity or making fantastic promises (unfortunately false most of the time).
In case the above mentioned doesn’t work they always have some extra tricks.
However, if your kid weights slightly over one ton, you most likely require a kind of assistance from time to time.