Berocca

The act of consuming a few Berocca tablets, known for their vividly colored contents, followed by using a friend's toilet for a pee and deliberately not flushing. This action typically results in a brightly colored surprise for the next unsuspecting bathroom visitor.

Mike totally Berocca'd Jake's toilet last night. When Jake's brother went to use the bathroom, he thought he'd walked into a neon art exhibit!