With context, this sentence can be simplified to

有屎必有尿；有尿不必有屎。

romanized real name; result of clicking in Inkscape for 2 hrs.

deleted by creator

I’ve seen a type of hot dog where the synthetic meat stick is coated with sweet batter and then fried. The coating puffs* up and makes the whole thing look big. Maybe this is how they would supersize it.

*edit

edit 2: Apparently it’s called corn dog