I never figured I would be one that needed help identifying a particular plant but it turns out that I have finally come across something that I don't quite recognize. The plant in question is a volunteer that started growing under my eggplants. Now that the eggplants have lost most of the greenery and the weather has cooled down some this little sucker has taken off across the garden and started to produce fruits. The fruits are at max about 1.5" in diameter and seem to ripen up to an orange color. I cut one open the other day and it looked, not too surprisingly, like a melon inside. My guess is that it is a parent from the Lemon Cucumbers I grew last year but they just aren't quite the same.
This is a pic of a lemon cucumber.
These are the pics of my mystery fruit/veg. Can anyone guess what it is?