Pornsona
When signing up for porn sites or forums hosting adult content, the handle one uses instead of their usual internet handle so that friends can't track their porn habits using Google.
"Dude check this out, I just Googled the username James uses on Youtube and I can see all the porn sites he's signed up for!"
"...why would you even want to know that? Urgh, I wish he'd thought to use a pornsona."
"...why would you even want to know that? Urgh, I wish he'd thought to use a pornsona."