Definitions by Brownie724

YOSO

You only slide once. Termed for when you go on waterslides at waterparks and perform dangerous stunts and tricks on them. This usually occurs on rather large slides, with quite a bit of height.

"Jack is about to go down that giant waterslide while standing up!"
"YOSO, Jack! YOSO!"

YOSO by Brownie724 September 14, 2012