Tuna Piss
Not tuna fish, but tuna piss. This is the pungent odder of ones urine the day after eating a large amount of tuna fish. Hence tuna piss.
So I’m in the shower this morning, and like most people I let the urine flow. All at once I am overwhelmed with the smell of a tuna fish cannery. I remembered I ate two tuna fish sandwiches yesterday. I HAVE TUNA PISS.