Former President Bill Clinton posted a photo of himself in his cap and gown as part of Throwback Thursday on May 30.
Throwback Thursday -- marked by the hashtag #TBT on Twitter and Instagram -- is an internet trend where people post old (and often embarrassing) photos. Celebrities like Katy Perry, Rashida Jones and Kelly Ripa have all taken part in the trend.
Clinton said he was "remembering 1968 like it was yesterday" in his #TBT Tweet, posted ahead of a reunion at Georgetown:
— Bill Clinton (@billclinton) May 31, 2013