Eugene
Online
I did the math and research. According to Wikipedia, the average length of a penis varies from 5.1 to 5.9 inches. I went for a safe 5.5 inches for an average. The average radius from the core center of the penis to the skin on the outside is .75 inches. From this we can roughly find the volume with pi timed radius squared times height. This comes around as the average penis being around 9.72 cubic inches. Next I found the volume of the average human adult male. I had to first find the weight, which according to Alex Schlessingerman's "The Physics Factbook" is 70kg or 154 pounds. Weight is found by multiplying an object mass by the force of gravity, 9.81 meters per second. After taking gravity out of the equation, the average mass of an adult human male is 7.14 kg. I then found the volume by dividing this number by the average density of a human, according to Wikipedia, 985 kg per meter cubed. The volume of the adult male was then found to be .0072516316 cubic meters. Utilizing the volume of the average penis I found earlier, 9.72 in cubed, I get .0001592828 meters cubed. This means the penis is 2.19% of an adult male's volume. Assuming a lack of testosterone or female hormones makes the person a female, balls ignored for ease, ♥♥♥♥♥♥♥ a trap is only 2.19% homosexual.
If we assume that this is correct, futa can be made less gay than straight porn. You see, straight porn has one guy and one girl. Because you're fapping to something with one guy in it, that's 50% gay. If you watch futa ♥♥♥♥ a girl, that's one girl and a half girl, thus only 25% gay. You could make it 0% gay with two girls but the problem is, that makes them lesbian, which wraps back to being 100% gay.
we can assume that trap on woman would be only ~1% gay, because the 2 percent and 0 percent balance. But to tip the scales, you want to also have as MANY women as possible.
With the average penis having a surface area of 175 cm2 and the average fingertip having 4cm2 surface area we can easily get 43 fingers touching one ♥♥♥♥, perhaps 44 if we're lucky. So that's .02/45, with .02 being the amount of penis. This being said, 1 trap being touched specifically on the penis by 44 women who are not touching eachother would only be 0.044444444% gay. Minimum gayness has been achieved.
A counter argument would be that female masturbation, which contains only 1 woman, would be the least gay. I think those who support this idea forget that masturbation is homosexual incest. So with that being excluded, this is the least gay porn can be.