Piss Chunks 

Bite size pieces of watermelon. When eating watermelon properly, one usually uses a knife and fork and eats chunks of watermelon which are like bite-size pieces of the fruit. Watermelon is mainy water so eating a lot of it causes one to urinate frequently, the same as drinking beer does.

"Son, put some salt on those piss chunks, and you won't have to go so often."

Piss Chunks by Richard Black August 18, 2006