This is actually pretty easy to explain. As discussed many times already talking about your hand when others are involved is a major no no.
Here is one of many instances of what a google search for "poker etiquette" will produce.
Poker Etiquette: Basic Poker Rules and Table Manners
2. Don't Talk About Your Cards While the Hand is Still Going On
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google "poker collusion" ... one of the first hits
Poker Collusion
The most common form of cheating online is called ?collusion?. Colluders work in teams to either bet other players out of the pot,
share information about what cards they each have, or to ?chip dump? to one another.
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If you know two cards that are dead and they are no help to you then you gain an edge... If I needed one of 4 eights or one of 4 fours to make a straight I'd love to know that 2 tens were dead.