Well, I’ve never seen adults do it, not directly.

But kids will for sure. Drunk people are idiots, so them acting like kids is not unexpected.

However! A second hand story.

I have a friend that is one kinky bugger. Among all the things he enjoys is group sex and orgies.

He once told me about a party he attended where there were attendees wanting to be gang banged. One of those wanted the men willing to have at them to line up according to penis size, with the smallest going first.

After that lady got started, one of the other participants decided that he wanted the same thing, so the men willing to have at him lined up. But the guy noticed that length didn’t always correlate to thickness, and had them line up according to that.

Apparently, among that particular group of party goers, that became the standard way to sort out who went first when running a train. The reason given was that, especially with anal, it caused less discomfort towards the end and the next day, since all the muscles and tissues had time to relax and get used to being pounded by cock before dealing with the really big ones. Conversely, as those muscles relax, a smaller guy going after a bigger guy might not have as much fun, but a bigger guy would always have plenty of friction and pressure, so the cock wielders enjoyed themselves more on average too