Exclamation meaning essentially,This place is lame and boring and we should leave now. Used for everything from shops to clubs to parties. It is most often and most effectively used by itself among friends or associates who are familiar with it so that others will remain unclear to its meaning. Example: Bzzt.
BZZT
Meaning of BZZT in English
Slang English vocab. Английский сленговый словарь. 2012