"Go on and try a free bottle on the house." said the clerk. "It's guaranteed to make you eat like a bird."
Margo took the bottle and downed the contents without breathing. a second later, she dropped it because her hand was flattening. She doubled over, but not in pain. Her knees were inexorably drawn to her solar plexis, where they were disappearing. Her neck developed an odd crook while her lips began to harden.
From among the pile of clothes on the floor, margot the parakeet fluttered up to the counter. "What have you done to me?" demanded the little bird.
"Um..." stammered the clerk. "Did I say 'like a bird'? I meant 'AS a bird'.
Margo squawked hotly, then said "I'll take a dozen."