Trigger words: Doggy style sex, sexual act from behind, man standing behind, man on knees behind, grabbing waist
Use the above mentioned key words and create your prompt
Example: woman, maid, maid dress, on all four, butt up, on floor, engaged in sexual act, doggy style sex, man standing behind her, grabbing her waist, woman moaning in pleasure
You can use the Example prompt as reference, just replace the clothing and location with what you want to create