This means YOU!

Last night Robert told Bobby he needed crayons and paper because he need to make a Keep Out sign. Bobby obliged and Robert quickly got to work.

When he finished he held it up proudly and said "This Means YOU, Daddy! Now I need some tape."
Bobby asked why and Robert replied that he needed to hang it up on his playroom door. Bobby helped him hang it (high enough that it was out of reach for A&A)

I think the sign actually worked! Bobby hasn't been in the playroom all day!