First Lady Michelle Obama stopped by 'The Tonight Show with Jimmy Fallon' last night to teach teenaged Sara — host of 'Ew!' — and her friend Stacy — that being active and eating right isn't so "ew!"

Calling it now: Fallon flawlessly channeling his inner Tumblr fangirl as Sara (with no 'H' because 'H' is EW!) and a pig-tailed Will Ferrell makes out with a poster of Harry Styles will be the highlight of our day.

Mom. Wife. Geek. Gamer. Feminist. Writer. Sarcastic. Succinct. Donna has been writing snark for the Internet in one form or another for almost a decade. She has a lot of opinions, mostly on science-fiction, fantasy, feminism, and Sailor Moon. Follow her on Twitter (@MildlyAmused) for more of all these things.