Boombox Rika! (Patreon)

Inspired by a Honey Select Animator on Twitter, Prevence 

They make a lot of animations that involves a special Boombox that puts characters in a twerking trance and enlarges their butts.

Seemed like a harmless Trinket at first when Rika got some readings of it, but as Rika got close the Trinket activated itself and Rika could feel an urge taking over her as her butt started ripping through tights in her suit.