Funny 40th birthday gifts for people with a sense of humor

A 40-year-old woman laughing at her funny WTF Notebook birthday gift

Hitting 40 is a milestone that feels equal parts celebratory and surreal. It’s the birthday where life experience meets self-awareness – which makes it the perfect moment to lean into humor rather than shy away from it. Funny 40th birthday gifts work best when they acknowledge the milestone in a way that feels playful, not overdone.

For many people, turning 40 comes with a new sense of confidence, perspective, and the ability to laugh at life’s chaos. That’s why the best gift ideas tend to be the ones that feel relatable rather than generic – something that reflects their personality, sense of humor, and the stage of life they’re stepping into.

That’s where WTF Notebooks come in. Our range of hilarious notebook titles makes ideal 40th birthday gifts for anyone who appreciates sarcasm, self-aware humor, and everyday relatability. Printed to order in the USA and customizable across the entire range, these notebooks combine practical use with jokes that feel personal rather than random.

The WTF Notebooks 40th birthday gift guide

Below you’ll find a curated selection of WTF Notebook titles that are especially popular for 40th birthdays. Choosing two or three different titles is a great way to build a more layered gift – with plenty more titles available if you’d like to explore the full range.

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WTF Notebooks page element
A customer holding his blue WTF Notebook titled 'Times I was right and nobody listened'
A happy customer holding her red WTF Notebook titled 'List of people who have wasted my time'
A happy customer holding her pink WTF Notebook 'Inappropriate comments to make in serious situations'
A happy customers holding three WTF Notebooks, with the first one titled 'My list of things I was right about'