Johnny, are you just sitting around again?
I'm just taking a break between washing the windows and cleaning the toilet.
I'd say all you've done is moved the dirt from the windows on to your face and hands. Disgraceful!
I'm doing my best, Grandma. . .
Your best isn't good enough. Back in my day, I'd clean a whole hospital with a toothbrush and spit, and it'd be twice as clean as this sty!
Uh-oh, here we go. . .