If you create nuisance in public you may be guilty of an offence. According to Sec 268 of the Penal Code:
“A person is guilty of a public nuisance, who does any act, or is guilty of an illegal omission, which causes any common injury, danger or annoyance to the public, or to the people in general who dwell or occupy property in the vicinity, or which must necessarily cause injury, obstruction, danger or annoyance to persons who may have occasion to use any public right.”
The key words which give the authorities wide powers to arrest and charge you are “A person is guilty of a public nuisance, who does any act…which causes any…annoyance to the public”. In theory, any act which causes annoyance to the public may constitute an offence.
Recently in April 2017, a spate at a hawker’s centre in Toa Payoh was highlighted in The Straits Times. A couple was arrested for using offensive language and force against a 76-year-old man.