What type of conversations have you secretly heard and how did you do that?

It can be any way... Maybe by putting earphones/headphones but not really playing anything but actually listening to what people around you are gossiping bout some stuff thinking you are not paying attention to them... or maybe standing behind someone's door... or phonecall recording... or sittimg beside someone in front of someone in cinema n listening to what they say... or anything else?
What type of conversations have you secretly heard and how did you do that?
What type of conversations have you secretly heard and how did you do that?
Post Opinion