we're driving down to sd, B says he's hot (it's actually cool enough to not have the a/c on) so he opens the window. then he puts his right foot out the window.
Z sees that & says "i can do that too!", so he rolls down his window & puts his little foot out there too.
then B tells him wave at everyone on the freeway, so there waving toes at all the cars on the road with us.