At least I think that's what they are. I planted tons of zucchini and cucumber, so far one small zucchini. But these are growing like wildfire. The plants all look sort of the same, unfortunately. Last fall a friend came over and brought a bag of something similar to these as a gift, as a fall decoration for the house, and after the year's end I threw them in the garden as compost. At least I think that's what happened.
Anyway up til now, I thought I was imagining things and have been picking them in a tiny state and slicing and sautéing and enjoying. But I'm starting to have second thoughts about my future crop. They're starting to get BIG!