This is a discussion on When in your hand a monster within the online poker forums, in the Learning Poker section; I think it all happened when your hand, for example 7 10, on the flop 8 9 J, everyone folded, one player did all in,
You did not specify which suit all flop cards are. If they are of the same color, then I'm inclined to fold. And if a different suit then you can win an allin and worth a try. But maybe the opponent has a 10 Q card and then you lose. It may still be an option when the opponent on the flop got a combination of three cards and on the river or the turn will get a full house.
That's a tough situation, but with only one other player you've got a good chance of him staying in the hand chasing draws. But of course you also have to look out for made hands, obviously. The chance of flopping a straight with 1-gap connectors (e.g., QT) are 101.1 to 1. If the flop is also 2 or 3-card suited, you've also got a good chance of getting a lot of money in the pot while the other guy chases a flush. The odds that he actually flopped the flush are 117.1 to 1.
However, it really depends on how lucky you feel, and what position you're in. I'd play it aggressively (i.e., make him pay to chase) till he gives me good reason to think that I'm beat. I'm also hoping to see low unsuited cards on the turn and river, with no T or Q.
In most cases, I will only be happy to call. If this is not a suited board, then most likely you are ahead. There can be a top pair, there can be a set, there can be many other things that the villain will consider a good hand.
When flopping a monster or the outright nuts your goal should be to extract as many chips as possible. You need to know your opponents their ranges and how those ranges fit the board. Sometimes it is better to over bet, sometimes better to under bet, and sometimes better to give a free card. This is very situational and many things need to be considered.
Bro don't bother player 2 gappers I have seen the statistically analysis on gappers and the difference between 1 and 2 gappers is massive. I only play connectors and 1 gappers 2 gappers are just a waste of money.