You trip... hence, you FALL in love.
I mean, shouldn´t people be carrying signs that read "Wet Floor" or "Slippery"? Or CUIDADO MARICA QUE TE VAS A VOLVER MIERDA!?
That´s a useful law we could introduce in congress. Or National Assembly. Or parliament. Then, (obviously, because some of us are blind) manipulate it and sue the fuckers.