Mom: Ben, it's almost time for dinner, please clean up the paints
Ben: I think Sasha might want to keep painting
Mom: Sasha, are you all done with the paints?
Mom: Ok, Ben, clean 'em up
Ben: No, no, Mom, just wait. Sasha, do you want more paints? [spoken with enthusiasm]
Sasha: [mirroring enthusiasm] Yeah!
Ben (to Mom): See!
The boys have started to use the fact that Sasha answers pretty much any question with a "yes" to their advantage... crafty devils