Guys’s or your guys’s, as commonly used, is a nonstandard form of the possessive pronoun you guys’. The phrase is often used in informal conversations and writing to refer to a group of people or friends. However, it is important to note that your guys’s is not grammatically correct. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.