by Brown dog December 12, 2021

by Grey Dawg November 05, 2009

An acronym for "suck it up"
by Lynbrook Viking April 04, 2006

When that boatload of coal claimed whiplash, they called SIU in to videotape them playing basketball
by Teabag April 24, 2006

Acronym for 'step it up' meaning for one to reach a new/higher level then previously on.
Commonly used in forums and online gaming.
Commonly used in forums and online gaming.
by Charlag November 14, 2011

Did you watch Cristiano Ronaldo last night playing Manchester United VS Atletico when he celebrate he shouted Siu
by cr7_fan June 13, 2022

A trademark goal celebration by football player Cristiano Ronaldo.
It was first seen when celebrating scoring a goal for Real Madrid and has since become a trademark move even after moving to another club.
After scoring the goal Ronaldo ran, performed a mid-air pirouette, planted his feet and yelled a guttural "Siu!".
The spelling of the phrase is not widely agreed upon, but it equates to "Si" which means "Yes" in Portuguese.
It was first seen when celebrating scoring a goal for Real Madrid and has since become a trademark move even after moving to another club.
After scoring the goal Ronaldo ran, performed a mid-air pirouette, planted his feet and yelled a guttural "Siu!".
The spelling of the phrase is not widely agreed upon, but it equates to "Si" which means "Yes" in Portuguese.
The scream? The players know I always do that shout when I score a goal or when we win"
"It’s our shout, from Real Madrid."
-Ronaldo regarding "Siu" on Spanish TV station Cuatro after the 2014 Ballon d'Or ceremony.
"It’s our shout, from Real Madrid."
-Ronaldo regarding "Siu" on Spanish TV station Cuatro after the 2014 Ballon d'Or ceremony.
by onenemesis January 22, 2022
