Unfocused Procrastinator

What you must be considering that you are searching for this instead of doing something more productive. Typically due to lack of focus and being easily distracted.

Mom: Dave, are you writing your essay?
Dave: Umm...
Mom: (Examines what Dave is doing on his computer)
Dave! Why are you searching definitions on the Urban Dictionary instead of writing real words for your essay? You are such an unfocused procrastinator: