Male vs Female Pumpkin Flowers

Are you growing pumpkins this year? Watermelon? Squash? Any type of large vining edible? 
 
Have you looked inside the flowers?
 
female-flower.jpg
 
That picture up there?  That is a female flower.  The one below is a male.  See the difference? She's loaded inside while he is kind of a single long stamen.
 
male-pumpkin-flower.jpg
 
Each vine produces a bunch of males before it even wastes time setting the precious female flower and the real surprise of that female is actually outside the petals.
 
squash-flower-petal.jpg
 
Have you ever looked behind the flowers? Females have a little mini pumpkin or squash that when fertilized, grows huge and orange (or green or blue or white) and ripens to a perfectly roastable, carveable, edible fruit.
 
growing-squash-fruit.jpg
 
Can you identify the males and the females? Do you see the baby fruits developing? Pretty fascinating, don't you think?