Castiel came around to watch the process curiously, wondering what the thought process was in getting something like this. He understood the sentimentality behind Cole's marks, but surely not everyone had a story behind each of their images. Many of the humans he'd met didn't think that far.
"I remember once having this process explained to me," he admitted. "It was different."
Dean had been eyeing a woman in a bar and had commented on the marking on her lower back. He'd called it a 'tramp stamp,' and once he'd explained to Cas what that mean, Cas had brought up Dean's own tattoo for the sake of argument. While Dean was sexually promiscuous, there was no word to describe his actions.