It can be anything, from a person threating you/street fight or whatever.
Last time @ Toa payoh Interchange 1st Floor near Cake History @ the Male Toilet.There was this senile old man, scrawny.He kept asking people to diam diam in the toilet with occasional whimpering and sobbering.When i came out of the cubicle and washed my hands over the sink, he slammed his cubicle door open half naked from waist down.Bloody Hell the ku ku jiao massive 6 incher somemore got alot of pubic hair, the testicle so bouncy until got like water retention like that.Then he pointed to me and tell me to shut up

Cut long story short...Someone called 2 police officers and apprehended him but no charge probably cause he was a senile homeless old ah pek!
This is a true account...