Casual exchange is common across the border wall ranging fro small talk, long visits with friends and family, and commercial exchanges of items ranging from food and bracelets to illegal merchandise.  The Burrito Wall accommodates for a food cart to be inserted into the wall.  The proximity to the wall and the security overhang create shade.  Seating is built into the wall and food, conversation or a bi-national game of footsies can occur across the border.