François Rabelais’ Girdle Book

Origin
François Rabelais was a French Renaissance writer, humanist and monk known for his forays into fantasy and satirical writing. Many of his works feature indecent songs, obscene humor, sexual slang and profuse cursing. His most famous work, Gargantua and Pantagruel, is no stranger to these stylistic markers. It features a father and son giant taking several humorous, absurd and downright vulgar adventures with their band of misfit companions. One noticeable feature is that their height changes greatly between different sections of the story. Sometimes they are the size of mountains, while other times they are barely taller than the average man.

Effects
Causes the user to greatly grow and shrink in size. Sometimes they will be as tall as skyscrapers, and other times they will be the height of ants. Their height changes only at certain times instead of gradually changing every moment. To be activated, it requires the user to either create or take pleasure in some form of lewd entertainment, many times swearing or dirty jokes. Whenever a similar incident recurs, their height will again adjust. The user becomes more accustomed to any foul behavior and will increasingly commit any gross or stupid acts.