Begger's Signs

Often we see folks begging at traffic lights for spare change. Sometimes they have 'help me because I have a shitty life' signs. Sometimes they have honest 'need money for beer signs'. Sometimes they have funny 'ninja's killed my family, need money for kung fu lessons' signs. But what we really don't get is where do these people get black magic markers from? These people are begging for pennies and have money for a $3 dollar magic marker? We don't get it.