Mary smirked, knowing that Jo and Heather were likely right. The house was quiet, so either Sam, Dean AND John had left them alone (which Mary didn't believe for a minute) or her boys were up to no good. That thought alone made her almost giddy, because she could still remember fresh memories of John coming in for supper and stealing a spoonful of something still simmering on the stove. Yes, judging by Dean's appetite and the way Sam seemed to soak up anything to do with home and family, they were certainly John's sons, and they should be expecting something to do with mischief or thievery relatively soon.
"Don't feed the animals." Mary said, struggling to keep a straight face. "I can't speak for Sam, but I know if you let John or Dean get a bite of something you'll never get rid of them...and if there is any mention of pranking just get out of the way."