The code is:
<img border=0 src="http://farm4.staticflickr.com/3727/9407286838_dc85246cef_b.jpg">
Flickr doesn't want you posting its sacred content. So, they put barriers in place to keep you from discovering the URL of the images. Such as trapping right-clicks. But, obviously, you see the image in your browser. So, your browser obviously knows the URL ... You just need to find out what your browser downloaded!
E.g., on Firefox, you can right-click on the page, and select Page Info and look through the Media tab until you find the image.
Or, on Chrome, you can right-click and select Inspect Element and select the Resources tab and drill down through the images until you come to the right one. Or you can browse the document tree until you find the proper image element.
Once you've got the actual URL to the image itself (as opposed to the page hosting the image), it's simple to make an image tag, as above.
