This is a discussion on How do you recognize a bluff? within the online poker forums, in the Learning Poker section; How do you manage to survive/recognize a bluff made against you? How many times did you fall in the trap of a bluff?
One way to tell someone is probably bluffing is to go back and remember what they bet pre flop and what position they are in.
If they just called the big blind on the button, they probably didn't have AK or other good starting hands, or they would have raised to stop people with crappy cards from limping in.
So if the flop and turn show low cards, they are probably bluffing.
Just today i caught i girl trying to bluf me, blinds were 50/100 she raised X2BB i flat with my KT off, the flop 8K8 out of the gates soon it was her turn to act BAAAAAAAAM allin, i took all my time to think, something was just off the way she played the hand, i can feel it in my gut, so i start going through the hand, what she did preflop, why all in after the flop, the combinations, the math said she either had A8 or AA, but would u open X2BB with AA i dont think so, would u open A8 like that? sure u can, a NIT would, but she wasn`t one, so then i started to think mb she has QQ putting me on AJ, and all the time i had this gut feeling she was just bluffing her stack off, i called, sure enough T7, turn came Q dont remember the river, but she was pretty much dead on the flop, after that hand other players on the table did not try to steal or reraise my BB, when i was on the BB they all folded, every player knows what that means
When u play enough hands u have seen enough combinations and situations, that your subconscious picks up, when some1 tries to pull a fast one on you, thus the gut feeling kicks in, and you know what the math says in that situation, but u still hold on to your hand, and if u muster up a call there ull see if your gut is right or not, and i got to say i love my gut so far
It is necessary to look at the position, and the card that fell on the flop, turn, river and already judged. But in general the best way to learn is at autopsy. If the situation is repeated several times then you can safely meet the same bluff. I remember a situation when the player in the freeroll played very aggressively and are often bluffing. I had a triple A. I was in charge of re-raise to which he replied in the same re raise. At the end I went all-in on what I answered the call. As a result, he had a pair of 7 kicker Q. Such cases were numerous.