This was a clever illusion that was set up in many of the tourist hangouts (with a bucket for donations).  The guy on the bottom appears to be holding up a big metal post as effortlessly as a coffee cup.  There is nothing between his sleeve and his lap to hold up the weight.  Balanced on the top of the post is a second man in a mediation pose.  He appears to be light as a feather.  Both are real men occasionally moving slightly or looking around at the passers by.  They would sit there for probably more than an hour.