SOYSO

An abbreviation typically said letter by letter: "S.O.Y.S.O", but sometimes pronounced phonetically in a similar manner lol.

SOYSO stands for "Strap on your strap on", and means 'get ready to go' in regards to a serious and/or risky endeavor. This phrase is most often used as a rallying cry.

Jerry: "This $3 option is going to the moon. I just don't know if I can handle the path risk... it could get ugly before its worth anything"
Matt: "SOYSO man, load up! If you don't, Whomst will, don't be a baby."
Jerry: "Timst will... but you're right man" ***proceeds to buy way too many calls**