My Brother and I live together, but he went away for the weekend, so I decided to play a joke on him. Over the course of the weekend I squirted global of conditioner all over his room, on the walls, the pillow, the sheets the light switch, you name it was globbed. I the proceeded to wipe up the mess so it was no longer visible to the eye. I then went out and purchased some ultraviolet bulbs and got my friend to wire them up in the place of his bedroom lights. I then foiled up all his windows to Make the room nice and dark. Then I waited.

When he got home Sunday evening, I made sure the house was nice and dark by disconnecting the hallway light bulb. And watched from the shadows as he walked to his room and flicked the switch. 

Reaction was as planned, a what the moment quickly followed by a realisation of the nature of the joke. In case it's not clear yet,it was made to look like a vigorously ejaculated all over the place. 

I laughed like an asshole, he told me to go **bleep** myself and proceeded to burn my belongings in the backyard.

