Can everybody please give Lisa a big round of applause for that great introduction? (Applause.) Not only does she deserve a great introduction -- or applause because of the introduction, but also having three kids and one more coming -- (laughter) -- that deserves some applause. (Applause.) To all the moms out there. (Applause.) That is some work.

WHITEHOUSE: Remarks by the President in Golden, CO

They provoke laughter with behaviour characterized by gluttony, caustic humour and wit, but also possess great intelligence and wisdom.

UNESCO: Intangible Cultural Heritage