To date, these elaborate setups have been BJ's idea, but BB likes to play along too. All goes well, so long as she plays by his rules. (In other words, there's a fair amount of scuffling and negotiating.) But they are learning, and often they have great fun together in these imaginary worlds.
In this instance, BJ wanted to be sure we all understood that we were permitted entry into the water and encouraged to splash around. (This is not always the case; sometimes, the "water" is off limits.) Just in case there was any doubt, he made a sign to remind us:
"People Allowed In The Pond." He needed help spelling out the first two words, but after that he took over. Love the ransom note style, huh? (Yes, he's not yet four and already "writing" out words -- has been doing this for some time, actually.)
Wonder what the blanket will be next!