Ed continues to make him lick the foot that has been keeping him company for a while, until he decides to do something more drastic.

"Mustang, eat this!"

Ed then began to force his foot onto his mouth, making him savor the entire foot to his pleasure. Mustang felt really sick right now, and wanted to vomit then and there. But Ed used his other foot to his nose, making him smell foot odor alone, and no clean air at all.