I have youknowwhat.com. Bought it back when there was only one company selling domains and you had to pay two years in advance.

I used to get SO many "ecard" receipts from people who thought they were being clever by putting the "From:" as youknowwho@youknowwhat.com

It was so many emails, in fact, that I had to change email providers because they were threatening to kick me off from the traffic. That, and every other spammy email system that existed because that email address was in every single mailing list ever haha.