Money for free.

This man is a regular on the outraged demonstrations in Barcelona.

Today was not a day of outraged (we are all angry in Spain, but today there was no congregation), but a day full of street walkers enjoying the blue sky. However, there he was; this time offering Free Money (Diners Gratis in Catalan).
If you want to try and have patience to see their explanations, look for him on Las Ramblas.