Syskey
The SAM Lock Tool on a Windows computer. Used to lock your Master Boot Record, thus preventing you from logging in to the computer without the password. Used mainly by tech support scammers when they get mad at you.
Scammer: "So you will not pay me? I will syskey your dextop!"
Syskeying
When a scammer gets blocked out of their computer via system lock by a baiter.
Dude, I'm totally syskeying this guy.