First, a correction: though there was indeed a ceremony yesterday at the White House honoring President George H.W. Bush, the photo you see here is not from that event. This photo is from a couple of months ago at the opening of the George W. Bush Presidential Library. Our apologies.
Nonetheless, your caption suggestions for this photo were spectacular and worthy of praise. Though there were many many fine offerings, here are some that jumped out.
"George H.W. Bush's socks support marriage equality" ... Stephen Johnson-8303473
“Everyone say 'I've publicly criticized every man in this room' on 3!"---Care
"The world's most powerful people... and their husbands!"—Allen Taylor
“Everyone named George, please sit down.” ---massachusian
"Someone said there was an open bar here."—mjgossard
“Worst. Key. Party. Ever.”—snozberi
“You're probably wondering why I asked you all here today....”—radical spaces
“There's CAKE in the Briefing Room!”—Carole Priest
"Oh, come on. It's not like I'm gonna put it on the Christmas card."--Karyn-3047652
“Georgie, get up and let your mother sit down!”—barb4729
“Well, for once, the Bushes aren't on the far right!”—quickmind
“Why are these people so happy?”—ErsatzThinkTank
“Hello, I used to be president of the United States and I would like to share with you the most amazing book.” —Beth-Ann Bloom
"That's the Best We Could Do...Sorry, Earth"—SeverinDuJour
“Nobel Prize winners, stand on the ends, please.” —Stage Left