Any type of sweet, confectionary treat, usually of the prepackaged, mini-mart variety; such as Zingers, Little Debbies, Fruit Pies, Candy Bars, etc.

the whale tail is the shape formed when a g-string rides up high over a womans trousers

1. (noun) Junk food: soda, candy, chips, etc.
2. (adjective) easy, low-stress work, bordering on a paid vacation

Junk food. Food that has no nutritional value.