Internet slang meaning, "are you serious?", usually followed by the disbelieving remark, u canot b serios.
see serios
see serios
by Occupant Ilied Industries May 2, 2005
Get the r u seriosmug. Spanish for 'seriously', often used as a polite way of showing lack of interest, or as a cop-out to having an intellectual conversation with your friends
by Nate The Ape August 21, 2020
Get the En Seriomug. internet slang, short for "you cannot be serious"
used as an excited utterance when the poster simply cannot believe what was posted inthe thread.
used as an excited utterance when the poster simply cannot believe what was posted inthe thread.
by Occupant Ilied Industries May 2, 2005
Get the u canot b seriosmug. by oxyisdaddy November 9, 2021
Get the seriosmug. Serio is a solemn oath of absolute truth and loyalty used among close friends — a verbal contract that what you’re saying is real and must be believed. Serio 10 is the elevated, unbreakable version of that oath. It’s the equivalent of saying “I swear to God,” but on a deeper, more sacred level — a level 10 declaration of truth that cannot be taken lightly.
Once “Serio 10” is invoked, the statement must be 100% true — no exaggeration, no trolling, no lies. Breaking a Serio 10 is considered “abuse”, and doing so severely damages your credibility within the group.
Breaking it once leads to a loss of trust. Repeated violations result in social devaluation, exclusion, and eventual ostracization. Within this code, Serio 10 is sacred — if you use it, you better mean it.
Think of it as a verbal blood pact. You either honor it, or you’re done.
Once “Serio 10” is invoked, the statement must be 100% true — no exaggeration, no trolling, no lies. Breaking a Serio 10 is considered “abuse”, and doing so severely damages your credibility within the group.
Breaking it once leads to a loss of trust. Repeated violations result in social devaluation, exclusion, and eventual ostracization. Within this code, Serio 10 is sacred — if you use it, you better mean it.
Think of it as a verbal blood pact. You either honor it, or you’re done.
A: “Bro, I didn’t hook up with her. I swear.”
B: “Don’t play with me. Serio 10?”
A: “Serio 10.”
B: “Alright then. I believe you.”
... Later B discovers that A didnt actually hook up with her
B: "Abuse. Straight abuse. You're done."
B: “Don’t play with me. Serio 10?”
A: “Serio 10.”
B: “Alright then. I believe you.”
... Later B discovers that A didnt actually hook up with her
B: "Abuse. Straight abuse. You're done."
by bmankobe August 22, 2025
Get the Serio 10mug. 
by huntarhio August 9, 2021
Get the seriomug.