(one's) ears are burning
One intuits that people were talking about them, despite not witnessing it. Are you two talking about me? My ears are burning.
someone's ears are burning
someone is subconsciously aware of being talked about, especially in their absence. The superstition that your ears tingle when you are being talked about is recorded from the mid 16th century. Originally it was the left ear only that was supposed to do so.