The phrase "to fit up" means to set something or someone up for failure, disappointment, or disadvantage. It can also mean to prepare or arrange something in a dishonest way with an intention to deceive others.
Sentences with «to fit up»
It's a cute basic, but it wasn't the best fit up top, so back it went! (pumpsandpushups.com)
Our rooms, full kitchen and pool area comfortably fit up to 20 people. (sirenaserena.com)
If the fabric in that area doesn't fit up against your skin and hangs down between your legs instead, you shouldn't buy the jeans. (prettydesigns.com)