When a person turns up their shirt collar. People began to refer to it as a "popped collar" (especially after R&B performer Usher released a hit single in 2001 entitled Pop Ya Collar).
Please stop poppycocking your collar, honey.
Your brother is a fan of poppycocking, isn't he?
Usually, poppycockers are considered preppy-style people.
attending to or performing useless tasks while avoiding more important ones. this can be done physically, verbally and mentally and also can be intentional or inadvertant.
similar to bullshitting
the job did not get done because Mario was poppycocking around the plant.