When a man and woman are in a relationship they go to bed and ‘Do Bouncy Bouncy’

A term used to reference cannabis/marijuana/weed.

Bouncy-bouncy is the phenomenon experienced when an up-and-down motion, such as one created by walking, running, or in a best-case scenario, jumping on a trampoline, is exhibited by a female. This causes the chest to bounce up and down in a very entertaining manner.

Used to characterize boobies.

Bouncy Bouncy is the fancy words for the concept of bounce
The concept of bounce is the law: an object hits the ground at an expotential rate, as it hits the ground, it reverberates and therefore, is pushed into the air by the force if the reverberation

Big beautiful butt.