Undecaffeinated

Undecaffeinated: adjective. An object, most usually in liquid form, in which the process of decaffeinating has been reversed and caffeine has been added to something from which it was originally removed. Undecaffeination is particularly useful on April Fools' Day as a practical joke, since anyone who consumes undecaffeinated coffee thinking it is decaffeinated will find themselves under an increased amount of stress and will most probably end up running around wildly in a fit of hyperactivity. Because of the seeming impracticality of undecaffeination, many people simply choose to caffeinate, but experts will confirm that undecaffeination is far more sagacious.