Remember that whole "Is the dress white or blue" debacle? Sometimes an issue, not matter how trivial, splits the internet down the middle. The one you're about to see has had a gazillion people look at it and argue*.
Who is this a picture of: Tom Hanks or Bill Murray?
The photo is from the Reasons My Son is Crying Facebook page, where parents and guardians post photos of kids crying for hilariously silly reasons. This kid happened to be crying because "He met Bill Murray."
Yep, it's Bill Murray, but a lot of people still don't believe. Could the OP have misidentified him? It seems unlikely: the BBC spoke to OP Laura R and she told them:
It's definitely Bill. Bill's a good person to follow as he jokes around and takes photos with fans.
The BBC have contacted Tom Hanks for confirmation, so watch this space!
Who is this a photo of?
*Yes, we're aware that this photo (and the furore surrounding it) is, like, three years old, but it's still funny and is experiencing a renewed viral wave. So there.