This is the zucchini we got from our CSA (Community Supported Agriculture) share this week. I’m pretty sure you’re supposed to harvest them before they get to be the size of a newborn baby.
Seriously – it might not have weighed as much as a healthy newborn, but it was definitely as long/tall as one. Thing was the size of my arm (as you can see). We roasted it with some (normal-sized) summer squash and baked it into a lasagna, which nicely filled up an 9 x 13 baking dish.
What I’ve been reading: The Song Is You, Arthur Phillips
What I’ve been listening to: The Best of Elvis Costello and All This Useless Beauty, Elvis Costello; Exile on Main Street and Tattoo You, The Rolling Stones
IcyDaylight 
yes, they get scary at that size, and don’t usually taste as good. same goes for cucumbers.
still, you were brave to tackle it. i put zucchini on the grill last week to make a hot dog dinner have some redemption.