Creates a realistic penis pump with a penis that looks engorged from being pumped. You can use keywords like "purple penis" or "purple tinge penis" for discoloring. You might want to weigh those around 0.7 if you use them. There are keywords like "penis pump", "pumped penis", "huge penis", "huge pump", "fogged up" that you can play with and weight quite strongly to customize the effect. Other relevant keywords are "pressure gauge", "squeeze bulb", but they don't come through as well as I like. It often gives quite an intense look, like industrial vacuum pumps, oxygen tanks, a medical/laboratory setting with tubes, but you can prompt this for any setting.

You will want to include keywords like penis and testicles, "pov" if you want that angle.

Use high strength, in range from 1.2-1.8 generally, depending on model, CFG etc.

Use "light bulb" in the negative prompt. Because I used squeeze bulb in the tagging it likes to make light bulbs appear.