Someone must be talking about me. My ‘ears are burning’.
Or ‘Were your ears burning’? We were just talking about you.
‘Are/were your ears burning?’ means, when it is said about someone or to someone who was not present when they were the subject or topic of conversation. It is also a silly saying by someone who’s ears are actually hot which is interpreted that someone must be talking about them – my ‘ears are burning’.
Nice car you’ve got? Reply: Yeah, cost ‘me an arm and a leg’! means, it was expensive. It implies being similar to losing two limbs that generally, people would not like to lose. It can also imply that the price was over inflated.