---
product_id: 405137
title: "The Big Bang Theory Knock Knock Penny Black Adult T-Shirt Tee (Medium)"
brand: "ripple junction"
price: "€ 42.18"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.gr/products/405137-the-big-bang-theory-knock-knock-penny-black-adult-t
store_origin: GR
region: Greece
---

# Officially Licensed 100% Cotton Machine Washable The Big Bang Theory Knock Knock Penny Black Adult T-Shirt Tee (Medium)

**Brand:** ripple junction
**Price:** € 42.18
**Availability:** ✅ In Stock

## Summary

> 🌟 Wear Your Fandom Proudly!

## Quick Answers

- **What is this?** The Big Bang Theory Knock Knock Penny Black Adult T-Shirt Tee (Medium) by ripple junction
- **How much does it cost?** € 42.18 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/405137-the-big-bang-theory-knock-knock-penny-black-adult-t)

## Best For

- ripple junction enthusiasts

## Why This Product

- Trusted ripple junction brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Perfect Fit:** Available in Medium for a tailored look.
- • **Effortless Care:** Machine washable for easy maintenance.
- • **Comfort Meets Style:** Crafted from 100% cotton for all-day comfort.
- • **Officially Licensed:** Wear it with pride, knowing it's the real deal!
- • **Unleash Your Inner Geek:** Show off your fandom with this stylish tee!

## Overview

The Big Bang Theory Knock Knock Penny Black Adult T-Shirt Tee is a medium-sized, officially licensed apparel made from 100% cotton, designed for comfort and easy care with a machine washable feature.

## Description

From the uber-nerdy, popular TV sitcom, this tee features the popular line, "Penny! Knock Knock Knock."

## Images

![The Big Bang Theory Knock Knock Penny Black Adult T-Shirt Tee (Medium) - Image 1](https://m.media-amazon.com/images/I/71rHpIbbbpL.jpg)
![The Big Bang Theory Knock Knock Penny Black Adult T-Shirt Tee (Medium) - Image 2](https://m.media-amazon.com/images/I/71DVL9uyYuL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Big Bang Theory T-Shirt
*by L***S on November 8, 2011*

This shirt came earlier than I thought which was great. The quality of the material is wonderful, many t-shirts I've gotten online are very thin, this one is excellent. The fit was perfect so the sizes run true. The printing is also great quality I've worn it many times and it looks just as good as when I purchased. I do not dry my t-shirts, I hang dry so I don't know about shrinkage. Awesome t-shirt and I get lots of fun comments from other BBT fans when I wear. Highly recommmend!

### ⭐⭐⭐⭐ Good Quality Shirt - Arrived quickly.
*by C***S on February 2, 2012*

The T-Shirt is of good quality and the graphic has so far survived two washing's with no problems. The sizing of the garment was accurate and a 'Large' was actually a standard 'Large' by US standards. The shirt arrived quickly from the vendor with no problems.

### ⭐⭐⭐ Three Stars
*by P***N on June 14, 2018*

Doesn't feel like cotton.

## Frequently Bought Together

- The Big Bang Theory Knock Knock Penny Black Adult T-Shirt Tee (Medium)
- Funko Pop! TV: Big Bang Theory - Sheldon
- ​Little People Collector The Big Bang Theory TV Show Special Edition Set for Adults & Fans, 5 Figures in a Display Box

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**Shop now:** [https://www.desertcart.gr/products/405137-the-big-bang-theory-knock-knock-penny-black-adult-t](https://www.desertcart.gr/products/405137-the-big-bang-theory-knock-knock-penny-black-adult-t)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-03-02*