Shoot your cuffs - Idioms by The Free Dictionary
shoot your cuffs
shoot (one's) cuffs
To flaunt something. Displaying one's ornate or elaborate cuffs was a common practice among medieval noblemen. I know you're happy about your promotion, but try not to shoot your cuffs, OK?
shoot your cuffs pull your shirt cuffs out to project beyond the cuffs of your jacket or coat.
References in periodicals archive
You can even shoot your cuffs
while shirtless, a symbolic exercise signaling that you're really shirty.