3 sizes for butts: big, huge, and hyper butt, adding "bubble butt" can help make it more circular
3 sizes for thighs: thick, huge, and hyper thighs
1 size tag for hips: hyper hips
For sfx text try "wobble sfx", "wiggle sfx", "slap sfx", and "ass clapping"
Recommend putting "toony" in the prompt
Add "fur" if you want it to render a furred shape to the character's outline