I don't think that word means what you think it means

I had to laugh the other day when we were at the grocery store and I saw this:

These watermelons were slightly larger than canteloupes.  I don't know that I've ever seen a watermelon that small in Texas... never mind calling them giant!  

Isn't it funny the difference in perception based on what you're used to?  Here, these truly are giant watermelons (and shockingly uniform in size and shape!).  I've never seen any bigger.  In the US, I don't know that I've ever seen one this small.  

Makes me wonder what causes this difference... Anyone know?

Maybe climate?