gafflin'
To rip someone off like a thief in a movie. You sneak in and take what’s yours, usually while the boss is distracted by their own stupidity.
I gafflin’ the office while the boss was on a coffee break and took all the cash from the register.
He gafflin’ his mom’s house and took her diamond earrings and her cat’s collar.
I gafflin’ the school lunch line and stole every pizza for myself.