yes i do the same i have over four dozen white full size knickers and will put 6 pairs on and then let my morning pee just flood them i will then leave them to dry and use another 6 pairs the next day i have over a hundred pairs of knickers in total and i do this often as i love the smell of strong dried pee often rewetting them so no your not alone
I did this as a teen who loved wetting. I would put on about 6 pairs of underwear, imagine being pinned back back in diapers or still in training pants, and pee myself silly. It felt great, though I always ended up in a puddle with pee down my legs because I had no plastic pants.
And then I would have to hide the evidence of my irresistible wet games and wash them.