SYSO a.k.a ''Sort your shit out!'' Basically means you need to sort your life out or sort it. If your male and your pouring your heart out like the pussy you are then CERTAINLY need to SYSO!
Person 1- So, how's it going with your ''love-life''?
Person 2- I f*cking hate guys, FML!
Person 1- SYSO, bitch!
A speech made in years 7, 8, 9 and 10 of an Oxfordshire school. People spend time on them and generally find them to be the single worst experience of their life. Watching them is perhaps one of the most tedious exercises anyone can participate in with the rare exception of a good speech, such as those made by many year 10 students in Spring 2010.
Did you hear McGazza's syson ? It was epic.
Goetzscared me with his syson.
Mark's syson was on the moon landings being faked. What an idiothole!