What is 5.1?
5.1 refers to the state you are in when you become really loud after a drinking session. The 5.1 originates from the surround sound speaker system and hence you can hear the person from every angle.
1) Easy mate you on a 5.1
2) Turn it down bruv u reachin 5.1
A type of sound system.
Barlow: Five-point-one is *RIGHT*