Double Sam Switch
Switching shifts at work, with a catch. Co-worker works your shift today, and you'll work their shift tomorrow (but with no intentions of doing so, e.g. calling out "sick"), thereby getting you two off days, self-creating a week-end.
"Hey, where's Sam? Didn't she switch shifts with Wayne?'"
"eh, she called out sick."
"uh-huh, the old Double Sam Switch!"
"eh, she called out sick."
"uh-huh, the old Double Sam Switch!"