Toast the bread slices until they turn golden and feel firm.

Scoop the avocados into a mixing bowl and add the lemon juice, salt, and black pepper. Mash everything together until mostly smooth with a few small chunks left.

Spread the avocado mixture evenly across each toasted slice.

Cut each slice into two rectangles to make eight bites total.

Slice each black olive in half and set two halves on every bite to create eyes.