"One night whilst out drinking with my sister and a few of her friends, my sister was getting annoyed with all my comments about how great all her friends assed were, so she grabbed my phone off me and disappeared into the bathroom for a while. After a while she returned and whispered into my ear "something for you to ogle at later tonight" I couldn't wait until later so I went into the bathroom to check out what she had done, this pic was the result! I got an instant hard on and took a photo of my cock and texted it to her."