ONLY A STRANGER WILL HELP YOU WHEN YOU ARE IN NEED

This is nothing but the complete facts about life.  The first pic says it all.  When you are down in life,  only few people will remember to help you.  And funny enough such help usually emanates from people you don't even know. 
This is the time you'd know that some people were conversing with you before just because of the peanuts you were giving them.  When they can't get such from you anymore,  they will all disappear into thin air.  And this is the reason why you should treat all and sundry well especially when you can,  because no one knows tomorrow.

Ndi mmadu di bad (some people are just bad)