“Happy Birthday, Mushroom High! Still Stealing Socks & Hearts” Funny Adult Card – Hilarious 18+ Celebration with Funky Mushroom Design & Envelope

Looking for a cheeky birthday card for someone 18 or older?

This funny square card features a cute, cartoon “furry little mushroom” — fluffy, funky, and full of mischief! Just like your favorite human who steals socks… and hearts.

Perfect for anyone with a bold sense of humor!

Card Features:

• Square card with matching square envelope
• Envelope features a colorful inner lining for an extra pop of fun
• Printed on high-quality cardstock
• Blank inside for your personal message
• Great for adult birthdays and guaranteed laughs

Customisation Options:

Want to tweak the quote? You can personalise it to make it even more unique — or just as cheeky as you like!

• Add a custom quote at the top or bottom (max 10 words)
• Add quotes to both top and bottom (max 20 words total)
• Or select No Change to keep the original funny quote: “Happy Birthday, Mushroom High! Still the best at stealing socks and my favorite human’s heart.”

Important: 18+ only – this card contains adult humor and is for mature buyers.

Make them laugh out loud on their birthday — and celebrate with your furry little mushroom!