The Yid Hakodosh said that when he was little boy, he learnt the lesson that when two fellow Jews have a l'chaim together over some schnapps, and each one respects his friend, not considering himself greater than the other, then Hashem forgives their sins.
The Yid Hakadosh asked his teacher what one dot is and the teacher answered that it's the letter "yud". He asked further, what two dots were, and the teacher answered that it spells the Name of Hashem. He later saw a colon in a book and asked his teacher if that is also Hashem's name. The teacher said there is a simple way to tell: "If the two yuds are on the same level, neither one trying to raise himself above his friend than that is the name of Hashem, but if one is on top of the other, that is definitely NOT the Name of Hashem."
From then on the Yid Hakodosh considered any two Jews that met together, without any of them considering himself superior to his friend, as the Name of Hashem. The word כוס, is the first letters of וַיֹּאמֶר סָלַחְתִּי כִּדְבָרֶךָ, And He said: I have forgiven according to your word. However, the second word of the posuk, the Name of Hashem, is missing. When two Jews sit down for a drink of schnapps in the manner previously mentioned they themselves make up the Name of Hashem and we have the full verse of וַיֹּאמֶר י׳ סָלַחְתִּי כִּדְבָרֶךָ. So, the Yid Hakodosh said: "When two Jews sit down for a l'chaim, respecting each other properly, Hashem forgives all their sins."
May we all be able to reach the level of respecting every Yid the way we should, and then we will be worthy of being called a "Yid Hakodosh". L'Chaim!