The law of conservation of matter by Antoine Lavoisier:
Mass cannot be created or destroyed, but can change its form.
The law of WTF by Susie Felber:
The smaller the man, the wider he will open his legs on public transport.
Petite man on the crosstown bus today, left; poor squashed woman, right; annoyed Felber who was tired of a little man's leg on top of hers, not pictured.
