Stemming from the term fish taco, a tuna hot dog refers to the dildo worn by a woman during sex.

When you eat dirt for the first time and leave your family to build a shack in the woods

The Term used to describe an individual who has become so high from marijuanna that he misreads the lyrics to "Do the Hustle" as "Tuna Hotdog" - this is all while playing Super Mario Cart and playing with a black light.