[Small Fry]

I'm assuming you're refering to a situation where more than two players are involved in the hand. Like Players A, B and C where Mr. Question is player B. Player A bets and the action is to Mr. Question with Player C still to act after him and he asks player C what he is planning to do.

First I'm not sure there is really anything wrong with this. If player C is dumb enough to answer then thats his fault. But I can also see a situation where some players do answer him due to their inexperience, especially if they're going to fold as they don't really care about the hand, or it's outcome, any longer.

And it's not collusion. That would be if 2 (or more) players were acting together. Usually they try to do this covertly. I can see how this could be construed that way if it routinely happens with the same two players.

My advice, since I feel it is okay for him to ask this question is to advise all the players that they are not to act on their hand until it is their turn. This includes physical as well as verbal actions. Since it's not their turn yet they are forbidden from answering. Not they don't have to answer but forbidden from answering. By answering they are acting out of turn. And any action out of turn is bad for the game overall.