Strange Vegetables

We were surprised to harvest a few vegetables from the garden today.  I think the three inch rain we had on Monday gave a bit of life to our dead garden.  What is strange are the vegetables we harvested and their sizes in relation to each other.

What do I mean?  Well, we would expect the watermelon on the left to be the biggest...  Yet both squashes are bigger.  I don't think this is a seedless watermelon either...  Maybe two melon balls out of this specimen!