Mystery Squash

Mystery Squash
Originally uploaded by friuduric.

What is this thing? We've been watching it grow over the past few weeks and we are stumped. Its shape is exactly the shape of a pumpkin. Before you smart-aleks say, "Well, then, it's a pumpkin!", let me remind you that we are not newbies to this squash-growing thing, and last year we got 4 beautiul big carvable pumpkins from our garden.

Pumpkins start out GREEN, then burnish to orange after they've hit their final size. This squash has been a bright buttery YELLOW since day 1, and is still growing.

The only yellow squash I can think of off the top of my head is summer squash. The timing and the shape would rule that out. Help me, people, this is distracting me from better blogging.

Identify my squash. (click on the picture to get a better look.)