In the drawer with other utensils, down the side of the cutlery tray, probably lodged under the egg whisk and 4 spatulas and that thing for crushing garlic that I never use cause it's a bugger to wash.
Use a knife!
Of more concern was when my other half had gone out on a Friday evening, I was ready to settle down in front of TV with a beer....and I couldn't find the bottle opener! Now that IS time to panic!