I was letting my dogs outside for there potty break after they ate, after opening the door to the backyard my dog "luke" ran out to greet the nextdoors dog and ran under the grill. As he was running under the grill he lifted his head up and smacked it against the steel.

He looked back at me like i did it. Now hes not comming in when asked and runs from me when i get close to him.
I think hes pissed because i laughed at him. It must have hurt bad because my other dog "Jake" ran over to him and started licking him.
Man this is going to cost me a half box of dog treats!