Updated: Tuesday, 22 Jan 2013, 8:25 AM CST
Published : Tuesday, 22 Jan 2013, 8:22 AM CST
WASHINGTON, D.C. (CNN) - Maybe it was a lack of sleep or just plain boredom that sparked it, but Sasha Obama's big yawn during her dad's inauguration has gone viral online.
The president was talking education when the 11-year-old let out the serious yawn.
Still, she managed to keep clapping for her dad.