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1.
The opposite of topping up your drink by walking to the fridge with your glass, filling it, then returning to your seat.

A Topperupper is the act of grabbing the jug from the fridge and bringing it to your glass. More energy extensive, but can top up many drinks at once.

Mainly used with juice.
I felt like working on my diet, so when I went to top up my glass of juice, i went for a topperupper
by Dwamies March 03, 2010