frothing at the mouth
Example:
Addict 'Arold: Did you see that guy mixing ketamine and krokodil last night at the train tracks?
Regular Man Norm: Fuck no, what was he like?
Addict 'Arold: He was fucken frothing at the mouth!
Addict 'Arold: Did you see that guy mixing ketamine and krokodil last night at the train tracks?
Regular Man Norm: Fuck no, what was he like?
Addict 'Arold: He was fucken frothing at the mouth!