What is Lazy Loading?

Question

What is Lazy Loading?

[Edit after reading a few answers] Why do people use this term so often?

Say you just use a ASP/ADO recordset and load it with data or

Answer 1

Lazy Loading is a programming practice in which you only load or initialize an object when you first need it. This can potentially give you a big performance boost, especially if you have a lot of components in your application.

As usual, Wikipedia has more details.