I dont understand why in the kid glove episode why shawn was not with cory why he tried to get back his dad gift in the pool ???

https://www.youtube.com/watch?v=n3eJkf4erbI
https://www.youtube.com/watch?v=n3eJkf4erbIhttps://www.youtube.com/watch?v=n3eJkf4erbIhttps://www.youtube.com/watch?v=n3eJkf4erbI