Tea is a diuretic that elevates the rate of urination (diuresis).
There are several categories of diuretics.
The most common, legal, efficent and effective diuretic, known to mankind, being cups of tea.
All diuretics increase the excretion of water from the body, through constant peeing.
High comsumption of tea results in a high output of pee, hence teapee.
Teapee is the main social function of the elderly.
"Mavis!!! Your drinking too much tea again your be wanting another teapee soon."