Will is (unfortunately) really into photo bombing these days. This behavior is exasperating for me, because it often takes 10-20 attempts to score one photo of Hallie smiling her REAL smile and it's always into that photo that Will charges, unexpectedly and with a creepy grin on his face. Sometimes I can crop him out, but not always.
I always assumed that Will had learned his photo bombing skills from his Uncle Jeff, who I'd consider a photo bombing expert.
But then I saw this photo, and realized that Will's daddy is just as good at photo bombing as Uncle Jeff, if not better.