2
When you wank several times in a day and the fluid ejaculate slowly becomes more and more like water, with little clumpage.
Example:

Phil :" i had nothing on yesterday so i just spent the day potato juicing"

Example 2:

Janet : " Hold on! is that potato juice on my chin? you better not have been cheating on me"
by HeadboyKD May 26, 2014
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