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SYB means to “Sun your balls.” The practice of spending time in the sun with your genitalia getting some sun as well.
SYB is making sure to let your junk gets some sun just like any other body part to raise testosterone.
SYB by Mikeyjones888 June 7, 2022
Related Words
sybau SYB sybil Sybren sybaueston sybella Sybille SYBAD Syber sybermom
Shutup, You’re Boring (SYB) — the three words that end conversations, save time, and instantly let everyone know you’ve peaked in patience. It's the ultimate clapback for anyone who’s talking nonsense, flexing too hard, or dragging on way past your attention span.
SYB by standardjeff May 18, 2026

syb mock 

Anyone can drop a normal mock on someone like "you're ugly" or "you're stupid" but it takes a special someone to drop a dirty syb mock involving sybians, butt juice, vag juice and big round black sybian heads.

Any shit talk that involves sybian machines can be classified as a syb mock.
You enjoy sitting your fat ass on that nasty twin headed sybian dcarl WUWU WUWU. Drop that syb mock on your friends and see what they say.
syb mock by zoneseek October 4, 2006

syb.endlss 

The best mutual ever to exist and only gay for one person dbztard9000 ❤️
I hate dbztard9000 syb.endlss responds with “are u fucking dumb
Pronounced "sib-too-yah" it is the response when offered something of no value as an 'incentive'. An acronym standing for "Shove Your Brian Toy Up Your Arse", it came about as the result of a series of adverts on British television by different companies offering toys to people who would take out home or car insurance with them. These so-called incentives featured meerkats, a bulldog and finally after a series of particularly annoying adverts a toy robot called Brian. The company behind the adverts offered a free 'Brian Toy' to anyone who took out car insurance , home insurance with their organisation.
It demonstrates the contempt that marketing executives feel for the buying public if they imagine that this ridiculous ‘incentive’ is going to get everyone falling over themselves to do business with their company. Needless to say the 'Brian toy' was not the success that the company supposed, with the reaction of most people being "shove your Brian toy up your arse" which quickly became abbreviated to SYBTUYA. Very quickly, its use expanded to be the preferred response to anything worthless offered as an inducement or incentive.
"You know Dave's leaving at the end of the month, well the boss offered him a change of title. No extra money, same job but a new very grand sounding title."
"What did Dave say?"
"SYBTUYA"
SYBTUYA by AKACroatalin April 19, 2015
*mom gets home from work and walks into kitchen*
Me: hey mom
Mom: boi you better go clean yo room and do these dishes

Me: sybu
Mom: no u
Sybu by crazyboi6969 February 6, 2019