A long awaited rest after a long day, or week, it is a large accomplishment in ones life. For one to accomplish The Great Sleep, they have to rest for approximately 12 hours or more and they have to fall asleep before midnight.
When you fuck someone so hard that they start grunting in an extremely deep voice, often sounding like a shitty Golem from Lord of The Rings. This low grunting will continue until your partner lets out a massive screech. Signifying their change into the Gremlin King/Queen, they are now the ruler of all Gremlins, truly a noble honor.