Yorkshire Shampoo
When one masterbates violently in the shower as Yorkshiremen do, opens a shampoo bottle and ejaculates into it, mixing their ejaculate with the shampoo inside, meaning the next shower user will use the shampoo oblivious to it's contents...
Yorkshire Shampoo by Snoop Doggyy December 2, 2011
Get the Yorkshire Shampoo mug.