so, what you have to do is just make a link.
paste this in the place you want it to be.
<a href=”http://tumblr.com/account/deleted”>click here if i know you</a>
the text that is in bold (“click here if i know you”) you can change it if you want for the one you need c:
maybe the account won’t be deleted, but they’ll be really scared lol c: