Of course saying something like ‘you are needy’ is purely a judgement and not terribly productive towards understanding or communication (that is unless one likes verbal masturbation, alone or in a crowd). Oh I don’t mean to say that I only get horny when I am upset, but it helps.
It might just be them laughing a sort of fake laugh very loudly, trying to make you feel completely stupid or very uncomfortable. Many times its a verbal attack with an intense level of hate and loathing you would never expect from a complete stranger.