History Iceberg

I saw a woman on the bus today who had a shirt with "History Iceberg" printed on the front pocket. On the back was a picture of Speedy Gonzalez. It looked like a work uniform, perhaps for a kiosk that sold a cool treat like shaved ice, but the woman who wore it was at least 50 and way too well-to-do to have a job like that. Then again, a shirt with a two-foot Speedy Gonzalez on the back isn't exactly something a normal 50 year-old would wear. How do we reconcile these two imponderables? I don't think we can.