I'm handsome.

I'm handsome when I'm reading.

 I'm even handsome when I read upside down.

 I'm handsome when I take pictures with my brother.

I'm handsome in my overalls.

 I'm handsome when I can't figure out why I can't crawl away from Grandpa. (maybe because your dear grandpa is grabbing you by the overall straps!)

 I'm especially handsome (AND HAPPY) when I sneak away and cause trouble!!!