# Why do men need to thrust and stroke to achieve ejaculation?

**URL:** <https://boards.straightdope.com/t/why-do-men-need-to-thrust-and-stroke-to-achieve-ejaculation/109608>\
**Category:** Factual Questions\
**Created:** [May 17, 2002, 8:07pm UTC](https://boards.straightdope.com/t/why-do-men-need-to-thrust-and-stroke-to-achieve-ejaculation/109608 "2002-05-17T20:07:19Z")\
**Posts on this page:** 4\
**Page:** 3

<div class="post-metadata">

**Author:** ![Princhester](https://avatars.discourse-cdn.com/v4/letter/p/3e96dc/32.png) [@Princhester](https://boards.straightdope.com/u/Princhester)\
**Post date:** [May 21, 2002, 9:20am UTC](https://boards.straightdope.com/t/why-do-men-need-to-thrust-and-stroke-to-achieve-ejaculation/109608/41 "2002-05-21T09:20:06Z")

</div>

Please ignore the last sentence which is pure noise.

---

<div class="post-metadata">

**Author:** ![scm1001](https://avatars.discourse-cdn.com/v4/letter/s/c4cdca/32.png) [@scm1001](https://boards.straightdope.com/u/scm1001)\
**Post date:** [May 21, 2002, 10:22am UTC](https://boards.straightdope.com/t/why-do-men-need-to-thrust-and-stroke-to-achieve-ejaculation/109608/42 "2002-05-21T10:22:34Z")

</div>

> [@](#):
>
> \*Originally posted by ralph124c \*  
> \*\*I recall from reading Robert H. Rimmer’s forgotten classic “THE HARRAD EXPERIMENT”, that tantric practices allow a male to experience orgasm for as long as 4 hours! If this is true, the indians would be the dominat race in the world today…seriously, how to I extend my orgasm to more than my standard 15-20 minutes? \*\*

If the indians were to spend 4 h each time for sex they wouldn’t have time for anything else, including being the dominant race

---

<div class="post-metadata">

**Author:** ![LolaBaby](https://avatars.discourse-cdn.com/v4/letter/l/d2c977/32.png) [@LolaBaby](https://boards.straightdope.com/u/LolaBaby)\
**Post date:** [May 21, 2002, 12:09pm UTC](https://boards.straightdope.com/t/why-do-men-need-to-thrust-and-stroke-to-achieve-ejaculation/109608/43 "2002-05-21T12:09:37Z")

</div>

> [@](#):
>
> \*Originally posted by CnoteChris \*  
> \*\*  
> \*- In terms of the responses to dating the forty-five minute stud: are you women serious? Do you really, when in the mood, want to section out forty-five minute blocks of time to doing the deed? Every _single_ time?
> 
> No way, says I. I’ve been able to last forever in certain situations and at certain levels of intoxication, and in each instance, the woman actually seemed to be getting bored by the time I finished (And a bit irritated with me, too).
> 
> Personally, I think you wish for that because it so damn rare, but when it happens, you’d be thinking to yourself, ‘Good _God_ man! Hurry the hell up!’. \*\*

Oh, of course not _every single time._

But often enough. 😉 (Actually I should look like this 😃 )

If they’re getting bored and irritated…maybe a little “variation” may help…hehehe. Actually, I admit there are occasions where I am thinking, “Good God, get off!” (pun intended), but, that’s not very often.

---

<div class="post-metadata">

**Author:** ![istara](https://avatars.discourse-cdn.com/v4/letter/i/e79b87/32.png) [@istara](https://boards.straightdope.com/u/istara)\
**Post date:** [May 21, 2002, 1:39pm UTC](https://boards.straightdope.com/t/why-do-men-need-to-thrust-and-stroke-to-achieve-ejaculation/109608/44 "2002-05-21T13:39:48Z")

</div>

I just think it’s some necessary natural stimulus requirement, like having to touch the hair of a venus fly trap twice to trigger it to shut. If it shut too often or too easily, it would waste too much energy. So instead it waits until it’s sure it’s got a fly in it, hence the two-twitch rule.

The only other thing I can think of is the friction action makes the vagina more moist/ready for the sperm intake. I once read that “a vagina is a very hostile environment for sperm” so perhaps this improves that a little.

[Previous page](https://boards.straightdope.com/t/why-do-men-need-to-thrust-and-stroke-to-achieve-ejaculation/109608.md?page=2)