Dragonflies

its theorized that's why human penises are also shaped the way they are

This implies that there's some sort of evolutionary advantage to getting sloppy seconds. I don't know how I feel about that.
- Everyone loves a good underdog story.
- Well, do you think women consent was at thing back in the early days of homo sapiens?
- Oh, so that's why it's such a turn on, it's evolutionary advantage!
- We are animals, monogamy is not a part of humanity like it is in penguins.
  Our penises reshaped over millenia of orgies just to get all the other guys cum out. We are sluts of the animal world, like rabbits
- It implies that there were enough guys getting sloppy seconds for dick shape to give a reproductive advantage.
  While it could have been from a lot of free love in the ancient past, I suspect it's more likely much darker than that and the evolution of cuckolds is intertwined.
Huh... This whole time I've just been using my tongue.
They do be shaped the way that they are
- Ducks have a screw, cats have barbs, dogs have like, a stopper that blocks other humpers.

There's some thought that this is also the reason for the shape of the human penis

https://journals.sagepub.com/doi/full/10.1177/147470490400200105

Which really makes you think, shouldn't longer-penised individuals have an reproductive advantage over short-penised people? Longer penises can scoop deeper in the couchhole to get out other people's jizz. Why hasn't the human race evolved such that every male had 20 cm (7.8 in) penises?
- We kind of have. Human penises are waaaay bigger than those of other primate species, and many other mammals (relative to overall body size).
- Why hasn't humanity evolved such that every male had 20 cm (7.8 in) penises?
  Oh dear, no one tell him he got the short end of the genes..
  Joking, of course.
  I would assume penises didn’t need to evolve to be that long on average since vaginas are not that deep on average? So there would only be so much depth to reach in the first place. Possibly girth would also affect it - having a long noodle dick might mean no matter how deep you go, the penis might not be wide enough to effectively “scoop” it out.
  Again assuming, but after a certain length (bottoming out), width would become more important
- Longer penises can scoop deeper in the couchhole
  VANCE!
- The longer the penis, the larger the fraction of women who will find sex with that person painful, and at some point the reproductive advantage of scooping out others' semen will be nullified due to the fact that no woman wants to sleep with you. I think I read that four inches is the length that most women find comfortable, but I don't remember where I read it.
- Iirc humans already have way bigger penises than other apes
- couchhole
  I love this.
- Or make it up with more strokes, so longer intercourse.
- Long dicks hurt shallow vagina girls. You want a dick that exactly fits your girl
  Girls you hurt aren't going to be willing to fuck you in future