Arina ( our teacher for August) was telling Judi and I that here in Russia watermelon was considered a berry because it has many seeds inside.
Judi told us about a woman who taught her how to pick out a sweet watermelon. She said that watermelons are either boys or girls.
Girls are sweet and boys are not. The sweet ones usually have a spot on the opposite side of where the vine was attached that is bigger than one that is not sweet. I personally haven't looked at a watermelon's bottom to see what gender it is!
However, Arina says this does not always work because she purchased a girl watermelon and it was not a sweet girl!