Sam gets the last laugh

This just about sums up the relationship between my two boys.  One is generally naive and one is generally naughty.

  I love you, bro!

I love you too, Sammy.

Smiling Charley doesn't realize that Sammy's got that look in his eye.

And there it is!  He asks for a kiss and pulls out the slobbery tongue at the last minute.  Despite Charley's protest, some saliva is exchanged.  Disgusting and disgraceful, I know.

Sam reacts accordingly (ie: "I'm so, so hilarious!") while Charley mops his face.  

How can you not laugh at that scene?