Good thing i dont keep very sharp knives. Then again, if the knife had been sharp, maybe this wouldnt have happened. I had the seedless half of an avocado this morning in a salad, then this afternoon i went to make avocado on rye, and as i whacked the seed with the knife, the knife bounced and durn near sliced off my thumb! I have another avocado for tomorrow and a head or two of celery. Also cherry tomatoes - i dont cut those!