(CNN) - Something strange is happening in the photo above - we just don't know what it is. Cameras caught the moment, but not what prompted President Barack Obama and former first lady Barbara Bush to make these faces.
The pair was attending the dedication ceremony for the George W. Bush Presidential Center in Dallas.
What do you think they're talking about? Write your own caption for the photo in the comments below.
"Achoo," sneezed Obama. "Bless you, Mr. President, or is that politically incorrect?" said Mrs. Bush.
That's her normal facial expression. And President Obama is just reacting to meeting her.
I know It's an open bar. But, tell your son to put that thing AWAY!
you really won the presidential race again!!!!!!!!!!!!???????????
OMG George!! What did you have for dinner last night???
BREAKING NEWS: President Obama and former first lady come together in sneezing ceremony
Pres: What do you think of this mama? Mrs. Bush: Oh my goodness it is true!
George bush just received a telegram....it stated...."I'm running for president and Rumsfeld is going to be my vice"
"After years of extensive tutoring, George W, you went and said 'NUCULAR,' again!"
(Mrs. Bush) George! I can't believe you wore those pink socks!!
(Pres. Obama) OMG! They're burning my retinas!
Former President George H.W. Bush felt so moved by all the patriotism, he stood up in his chair, and his pants promptly fell around his ankles.
Three words: President Glenn Beck
That was a $10,000 pot of beans
Clinton just pinched me!
Proud grandfather "W" shows the video of his daughter giving birth to his first grandchild.
Obama: Did he really just say that? "Mission Accomplished"
Mrs. Bush: Where do you think I got all this white hair?
Marine stumbles and pushes Sr. former pres Bush down steps of ceremonial platform while Pres. Obama and former First Lady Bush look on in horror and dismay.
Did you hear what George said this time?
The things you see when you ain't got your gun!!
Suddenly they both saw on that breezy day how Donald Trump's hair reacts in the wind.
Two words: Joan Rivers
Initial reaction to some telling fact that was then glossed over.
They were curious about how much Chris Christie actually weighs... but they weren't that curious.
Poppy just shipped his wheelchair!.
Michele just announced she is proud of G>W> Bush and her Country.