Subway Anomaly

While riding the packed L train last week, I noticed a guy wearing a ball cap that depicted a stick figure with cartoony large hands and feet. "Big hands...big feet...You do the math!" it said above the stick figure. After rolling my eyes, I noticed that the man wearing the cap didn't have particularly large hands - in fact, his hands were on the average to small size. So what exactly is his hat trying to tell us?