Kevin Manion, a boy who lives with his family in Wisconsin, had a brilliant idea one day.

His idea was to see how long his mom could go without noticing him switching their family pictures with pictures of the actor, Steve Buscemi. His plan consisted on him switching out just one picture every day for as long as possible so that the process was gradual.

Kevin’s sister, Clare, also participated in the prank by noting the changes Kevin made on Twitter, where Kevin had developed a following of avid fans rooting for him. After a few days of their mom being none the wiser, unfortunately, their run didn’t last forever, and she eventually found out on the 5th day. Their father, on the other hand noticed the very next day. Little wonder they didn’t try to prank him. The mom certainly had a great laugh and couldn’t believe it.

How long would it have taken you to notice?