They're for those whom its obvious have no "common sense".
Walk over to them, smile and say.... "Here I would like to give these to you,. Have a nice day". Then smile, turn and walk away... Then when you are at a safe distance turn to see what he is doing. I'll almost guarantee you that 1 of 3 things will happen or maybe 4.
1. They will be standing there looking back at you with palm open looking at the pennies and then at you.
2. They will be showing them to their friend who is also trying to figure out why you just did that.
3.They will be standing there trying to figure out "What the hell does he think I can buy with 2 cents?"
4. He is going to calling out to you. " What do I do with these?"
If by chance he does that... Just tell him... Never mind, give them to someone else... Cause its obvious they are not going to help him.
End note: If by chance, after reading this and you do not understanding what I'm trying to say...