Well not really. But according to this some species of squid engage in cannibalism:
Now Bruce Deagle of the University of Tasmania, Australia, and his team have analysed the gut contents of a male giant squid caught by fishermen off the west coast of Tasmania in 1999. Among the slurry of macerated prey, they found three tentacle fragments and 12 squid beaks. The beaks could not be unequivocally identified, but all of the squid DNA in the slurry, and the tentacle fragments, was found to be that of A. dux (Journal of Heredity, vol 96, p 417). "This strongly suggests cannibalism," says team member Simon Jarman of the Australian Antarctic Division in Kingston, Tasmania. The only other prey species identified was a fish, the blue grenadier.
And at the mosy inopportune times:
"The male giant squid has to use a puny 15-gram brain to coordinate 150 kilograms of weight, 10 metres of length and a 1.5-metre-long penis," he says"He physically plunges this penis into the female's arms, which are rather unfortunately right next to her beak. Because he is coordinating so much with so little, I think occasionally bits get chewed off when they inadvertently get too close to the beak."
I was looking forward to our squid overlords but if they are going to be biting penises, er, phalluses off I'm going to have to rethink that!