As soon as Rodrick's final words entered everyone's ear, I only had to sit back and pat the dirt off my clothes as everyone else in my party plus KC almost beat him to death from saying such things. While it was true that some "entrances" could feel loose from time to time, in his case, the reason couldn't be more obvious and the mention of such "sleeves" was already a huge tell about his size.
And not to talk down to people with the same condition, while it's awful to belittle them in such a way, it wouldn't help them if they wouldn't do anything external about it because it was one thing to feel confident about their body and it was another to fully satisfy your partner.