Have you ever been having a conversation and halfway through were struck by the thought that the other person might not be telling you the truth?
Well, if you think someone might be lying to you, it turns out there are some simple signals you should be looking out for while talking to them.
It's all in their body language, an expert claims, you just have to know what their hands, lips and eyes are really telling you.
Poker website Replay Poker has teamed up with leading body language expert Mike Carter, to reveal the ten tell-tale signs of lying.
So, how do you spot a liar?
Learning how to read body language can be quite advantageous and you need to pay close attention to where people are looking, whether or not they keep licking their lips and what they are doing with their hands.
According to Mike Carter, the number one signal that you're being lied to is if the other person keeps looking to the right while talking.
He explains this shows that what they're saying is in their "imagination and not memory".
Other important clues to look out for include excessive blinking, licking or touching their lips, taking deep breaths before speaking, repeating the question before answering and their hands tensing into a claw shape when speaking.
They might also fail to provide specific details, block off people with their hand and foot movements, break eye contact and hide their hands behind their back (as hand gestures reveal emotion).
Commenting on the research, Thibault Richard-Folian, General Manager at Replay Poker said: "People communicate mostly with nonverbal cues and learning how to decode deceptive body language can be proven quite advantageous when understanding what people are really saying to us.
"We conducted this research to help our players interpret their opponent’s body language and nonverbal communication signs, sharpen their lie-spotting skills, and make it difficult for others at the table to read them in return."