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An exclamation which is to be used when somebody:
1. humiliates him or herself, or
2. fails to complete a task in a spectacular, yet comical, manner.

Derived from an ex-Rangers football (soccer) player, Filip Sebo, who was an utter failure with 'ra Gers in his only season with the team.
1. A man rides his bike down the street and he fails to see the curb ahead of him. The bike slams into the curb and the man is thrown off the bike. If you are on a car and spot the incident, be sure to yell "Seeebooo! Seeebooo!" at the man.

2. You are at the beach. You and a group of friends are tossing and punching a beach ball up in the air, when one of them swings and completely misses the ball, resulting in the ball hitting the ground. This is the perfect spot to yell out "Seeebooo! Seeebooo!" at the said friend.

(Particularly effective when the person at the end of "Sebo" is in no position to say anything against it.)
by KRHimself November 02, 2007
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An American-Mexican sub culture slang term that is used as a characteristic descriptive for some one who is very bold and daring, even tough at times, someone who will not take anyone's "shit" so to speak, very close to the American slang term "Savage". Also depending on the situation and the context it's used, it can mean careless, in culmination with being bold and daring, Someone standing up to a bully and knocking him out could be considered sebo, however someone being daring yet careless and getting hurt or breaking something in the process would be considered "sebo" like juggling wine bottles, dropping one and it breaking.
Two men are driving down the road and are pulled over for no reason by a police officer trying to reach his quata, he wrongly assumes that because of their Mexican heritage , location, expensive car and expensive taste in attire that they must be drug dealers associated with a cartel. The two are actually a pharmacist and a car salesman both making a substantial income so can afford expensive things and are both only guilty of drinking on occasion and consuming cannabis recreationally when not on the job or driving, however they live in a state where cannabis has been legalized for recreational use. The police officer approaches the car and proceeds to interrogate the two and demands to search them and the vehicle. However the salesman once upon a time had aspirations of practicing law, and knew much of it. He informed the police officer of the laws the officer had just broken and the rights of himself and his friend. He completely made a fool of the police officer , the police officer apologized and let the two gentleman go. While driving away the passenger, the pharmacist, exclaimed "Oralé bro that was fucking sebo as fuck wey, you straight put that po in his place!"

A group of friends are playing call of duty, in a team deathmatch in a party online, one foolishly runs out in the open and inevitably gets shot and costs the team. One of them says "¡Sebo!" And proceeds to laugh and point at the person who was so bold yet foolish.
by Blankchex+++ January 29, 2018
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