Is 'chat' used to 'mess with the mind'??

[SeaSiren]

Usually I like a friendly 'chatty' game... but sometimes I get a Bozo that seems antagonistic (like this guy tonite)... Is it a strategy to #*&% with players?? Kinda did piss me off! and might have made me do things differently. Any thoughts... ignore? have snappy comeback? turn off chat??!! Here's just one of his little rants:
> Killer51 collected 675 from pot
> Killer51: shows [Ks Kc] (a pair of Kings)
> SeaSiren.xo said, "uh..had QQ!"
> moda1 said, "YEA RIGHT"
> moda1 said, "bet 90 on the flop with QQ and fold to that riase"
> moda1 said, "mmm hmm"
> moda1 said, "you had ace 10"
> SeaSiren.xo said, "qq"
> moda1 said, "nope"
> moda1 said, "dont believe u"
> moda1 said, "u r a liar!!!!"