One of my coworkers is very forgetful. He makes funny excuses if he dropped the ball on something, or totally missed giving an important communication to someone... When I have to go to him to discuss what happened, he often says:

"oh I'm sorry, I was too busy chasing squirrels!!"

I love the guy, but seriously, he says that ALL the time. After a while, I couldn't help but laugh and say, "well let's get a shotgun and the shoot them so you can focus"! hah