when I hear people laughing
paranoia:
They're laughing at you, all of them. They think you look weird. They think you look awful, like shit. They're laughing at you because you're ugly. They pity you. They're glad they are nothing like you at all, you freak.
TRUTH:
they are laughing because they're talking with each other about something funny. they probably don't even notice you. they saw you on the street and forgot about it minute later. how many people that you pass on the street you remember yourself? they're not laughing from you, this is only in your head.