“SINCE YOU KNOW IT ALL…” – FUNNY “KNOW IT ALL” T-SHIRT
A Bold, Sarcastic Tee That Says What Everyone Else Is Thinking.
If you love humour with a bit of edge, this shirt was made for you. Featuring a laid-back character relaxing in a chair and the unforgettable quote:
“SINCE YOU KNOW IT ALL, YOU SHOULD ALSO KNOW WHEN TO SHUT UP”
This T-shirt says exactly what everyone else is thinking — but with style, personality and plenty of humour. It is the perfect blend of attitude and comedy, wrapped up in a playful cartoon-style design.
The chilled character in the chair gives off the ultimate “I’ve heard enough” vibe — turning a sharp message into something cheeky, funny and wearable in everyday life.
A Shirt That Speaks For You
We all know someone who always has an opinion… and never stops talking. This shirt delivers a hilarious reminder for:
- the “expert” who always knows everything
- the non-stop talker in the group chat or office
- family members who never let anyone else finish a sentence
- friends who could use a gentle (but funny) reality check
This tee turns a blunt message into a joke — making it funny instead of harsh. It is perfect for casual wear, social gatherings, relaxed weekends or anytime you want your outfit to say what you don’t feel like saying out loud.
Expect Reactions (The Good Kind)
Wherever you go, this shirt is a conversation-starter. You can expect:
- smiles and laughs from people who “get it”
- comments like “I know someone who needs this!”
- light-hearted banter with friends, coworkers and family
- a fun way to show your sarcastic side without saying a word
The Perfect Everyday Funny Shirt
This is the kind of novelty T-shirt people actually wear — not one that gets hidden at the back of a drawer.
Perfect for:
- casual weekends and days off
- social catch-ups and barbecues
- school runs and errands
- work-from-home days
- casual Fridays at the office (if they can handle your humour)
Bold enough to get laughs — friendly enough to wear almost anywhere casual.
A Perfect Gift For Anyone With a Sense of Humour
This T-shirt makes an amazing gift idea because it’s relatable, witty and instantly funny. Ideal for:
- friends with sarcastic humour
- co-workers and office gift exchanges
- birthdays and celebrations
- family members who “know it all”
- anyone who loves novelty graphic tees
It is a fun, light-hearted way to tease someone you love — or to treat yourself.
Comfort Meets Quality
A great joke shirt should still feel great to wear — and this one absolutely does.
- soft, breathable cotton-blend fabric
- lightweight, relaxed unisex fit
- comfortable for all-day, everyday wear
- durable print designed to resist cracking and fading
- non-itch, smooth feel against the skin
- easy machine-wash care
Care: Wash inside-out in cold water, tumble dry low and avoid ironing directly over the print to help keep the design looking sharp.
Size Guide (AU / Unisex)
Unisex sizing. Order your usual size for a standard fit — size up if you prefer a more relaxed, oversized look.
| Size | Approx Chest (cm) |
|---|---|
| XS | 86–91 |
| S | 92–97 |
| M | 98–103 |
| L | 104–109 |
| XL | 110–115 |
| XXL | 116–121 |
| XXXL | 122–127 |
Why Buy from EVERYTHINGX
- quality apparel
- meaningful, relatable designs
- fast processing
- excellent customer service
This shirt isn’t just clothing — it is attitude, comedy and a personality statement in one. It adds fun to everyday outfits and stands out in the best way.
Add this hilarious “Know It All” humour T-shirt to your cart today — and enjoy a shirt that says everything perfectly, without you having to say a word.
