Use a large cookie or biscuit cutter, press into the slices of bread, pulling away crust and excess to cut into circles. Use a paring knife to cut jagged little ‘teeth’ into one side of the slice of cheese. Stack the slices of lunchmeat on the bottom piece of bread & put the slice of cheese on top with the jagged edge facing ‘out’ and slightly hanging over the edge. Spread a bit of mayo and/or mustard onto the inside of the other cut piece of bread and then top the sandwich. Break a toothpick in half & insert one half into a pimento stuffed olive & the other into the top of the sandwich. Repeat with the other one forming your monster eyes. Repeat as many times as needed for your desired number of sandwiches.