noun
Large numbers of assistants generally vandalising the station and antagonizing security personnel. They usually wear grey jumpsuits, hence the name.
verb
To be a part of the greytide.
Greytide broke into security and stole the guns from the armory, we're fucked
*BWOINK* Stop greytiding or I will ban you.
Incompetent, power hungry security guards who think they're the police. They always try to find an excuse to mess with people.
Mall shitcurity kicked me out because they thought that I was a bum!