The gum adhered to the sole of the shoe.

Believe it or not, it came in a pack of gum.

Researchers at the Gorilla Foundation have to spell out words like "c-a-n-d-y" and "g-u-m" when Koko is nearby.

Gum got stuck to the bottom of my shoe.

Some gum stuck to his shoes.

There's gum stuck to the bottom of my shoe.