The fact that you then call this bet will set alarm bells ringing in their heads, as they may fear that you could well be slowplaying a very strong hand. Therefore it is not uncommon that our opponents will be making a bet on the flop with air, hoping that you did not catch a piece of it either and that their continued aggression will give them the pot. The play works well because it is typical for an advanced player to make a continuation bet on the flop, regardless of whether or not they caught a piece of it.
It is possible to make a successful maneuver like this with any two cards, which typically makes it a good bluffing play.
The float play essentially involves calling an opponent’s bet on the flop (floating the flop), and then betting after being checked to on the turn to win the hand before seeing the river card. The principle role of the play is to make your opponent believe you have a stronger hand than theirs via the flop and turn betting rounds, and thus closing down the action and winning the pot on the turn. The 'float play' is an advanced bluffing technique in Texas Holdem that is extended over two betting rounds.