Mr. Helper...

Sam, amidst a sea of Lincoln Logs: "Mom, can you help me build this house? I can't do it!"

Me: "Sam, you haven't even tried. Try first. I think you can do it."

Sam: "Come on, Mom! Can you help me with this? I help you with things all the time. So why don't you just come over and help me with this..."

Pretty persuasive fellow...