As @gastroglizzy@piefed.social wrote:

Same here. It’s called the chubb rub. Our thighs are thicc enough they rub together in that spot when walking.

It’s why I learned using a sewing machine: put a soft patch on it on the inside, then sew over it like crazy. Well, there’s techniques but for my sewing averse mind this works well enough.

edit: oh, it’s carhartt. I used to have a pair of their pants that lasted over 10 years. Then I bought an almost identical pair which lasted only 1 year. Same area iirc. Of course that can be ascribed to my thighs getting thicker as well, but not completely.

You can add a gusset to the groin for better flexibility and wear resistance, it’s much better for workwear and you’ll see it in a lot of martial arts pants as well.

Besides that I recently was reminded that damp cloth abrases more, and it might be pertinent to switch between multiple pairs of work pants over the week (give each a couple days to air out inbetween). Apparently this is where the 5 suits recommendation is from, although for wool suits.

Yeah, that happens to me. Farting. It’s farting. All the time! Truly! Weakens the threads.

If it makes you feel better, I have consistently blown out the seam by the taint on every pair of jeans I have worn since I was 15.

Me as well. It’s the same reason I stopped wearing jeans as they only last me 9 months. Thick thighs due to heavy squats may play a role there. I switched to a stretch fabric and that seems to help to certain extent. Current work pants are by Snickers Workwear and those last me few years.

Try a less abrasive butt plug.

Everyone here gas said it already, this is thigh rubbing causing the damage. Adding additional fabric from the inside will not work, it needs to be on the outside, and I would recommend something tough like a harder synthetic fabric. Many brands of workwear come with different material there, but patching existing pants is not that hard, the issue is making it look nice and that really comes down to actually matching the fabric appearance and doing it neatly.

That said, a short term solution may be to patch it from the inside. It won’t stop it having visible wear if checked closely, but if your thighs touch then they won’t be visible without you spreading your legs apart quite far. The layer being on the inside will protect your underwear from the worn section and also make it more comfortable. Of you use a single continuous piece connecting from one thigh to the other it can cover all the seams may make it more comfortable, though that is down to preference.

You can defenetly have that area patched from the inside.

Pretty much all my jeans are patched there (biking tears through pants) and you barely notice.

This happens to me because of constant bike riding.

I wonder if Blåkläder work pants would hold up better for you. I’m not sure where you are, but they’re sold here in the USA too. They use different fabric specifically in that area. The pants come in a number of colors but here’s the white version which lets you see the fabric differences more clearly:

Darn it

Same here. It’s called the chubb rub. Our thighs are thicc enough they rub together in that spot when walking.

this happens to me too. just means we have thick thighs (unironically)

All my jeans end up like that.

Once I sewed a “protection” inside from a piece of old jeans to alleviate the problem. Turns out the rest of the jean was just like weeks away from global collapse anyways and broke down in several new places 😔

On new pants, you can sew sections over that area and that way those section wear while the pants don’t. You just replace the sections when they wear through. Or just embrace Boro.