Something you yeet into your xbox one and play for 999 hours
A crease is when somebody purchases a new pair of shoes (usually very expensive ones) and then bends the nose of the shoe upwards (usually happens when raising your heel upwards), causing the shoe to form a crease where it was bent. This is considered dishonorable or disrespectful to the shoes as it leaves a permanent and obvious mark.
"Hey did you hear about Jeff's new shoes?" "Yeah, did he crease 'em yet?" "Yeah, he just bought them this morning too!"