There is a custom that I've seen in many homes whereby the most honourable person (e.g. the bal habayit, a cohen, a rav) actually goes last in the order of netilat yadayim. I've heard the reason given is because this means they have to spend the least amount of time not talking, and I believe I heard that it also is the best halachic situation because they have the shortest hefsek between washing and hamotzi.
However, combine this with another idea I once heard. The idea is that yidden have a beautiful minhag whereby everyone fills the cup for the next person. Everyone is still filling a cup, but they are doing it for someone else rather than themselves, and is thus more selfless and kind, at no extra cost!
Note though, that the first person will have to fill 2 cups! The last person doesn't fill any cup!
It therefore makes a lot of sense that the very last person is being honoured the most, as they are not serving anyone else, and yet are being served. The first person is being honoured the least, as they serve and are not served.
Does anyone know if this is a given reason for the above minhag anywhere?
I apologise that I do not have a source for these minhagim and would appreciate if anyone has any