3 pictures come up on the main page.
Here they are, with the original captions
American college students at a party
British children having a party
Children having a crepe party
Also, for those of you who are pretty sure that, when it comes down to it, you like, know what a "child's birthday party" is, but aren't sure that you could actually define it, Wikipedia provides this easy-to-memorize definition:
A childs party may be held at his/her home or in a public place. Soft Drinks and both sweet and savory foods are typically served.