The Lazy Load Pattern loads objects only when absolutely necessary. Its goal is to conserve memory and CPU cycles. jQuery uses this pattern in small ways. Here is a snippet from jQuery:

// not intended for public consumption.
// generates a queueHooks object, or returns the current one.
_queueHooks: function( elem, type ) {
    var key = type + "queueHooks";
    return jQuery._data( elem, key ) || jQuery._data( elem, key, {
        empty: jQuery.Callbacks("once memory").add(function() {
        jQuery.removeData( elem, type + "queue", true );
        jQuery.removeData( elem, key, true );
     })
});

This method is for private use only as indicated by its comment and the underscore (_) prefix which indicates that the variable or method is private.

The comments hint at the lazy loading aspect of the method: generate the object or if it exists return the current one. The return statement returns the result of jQuery._data and if that one does not exist (i.e. is falsy) then go off and create a new instance. This is a subtle use of Lazy Load.