BookOfKen is a popular American YouTuber, who is known for his funny pranks he plays on his girlfriend. He first posted his YouTube video in 2014 and has since then amassed more than 3.8 million subscribers. His videos mostly focus on funny public pranks, couple pranks, and other fun videos. The idea behind the channel was to make people smile and enjoy the moment. He started a second channel titled ‘UnKensored’ to focus on his real life and upload vlogs. Ken’s videos touch on a bit of everything, from girlfriend pranks to truth or dare challenges. His unconventional and candid approach has made him on one YouTube’s most followed channels. His fans enjoy the authenticity of the pranks and the reactions to them.