scrapbooking is a practice that some guy's engage in to record all the cumshots they've swallowed as a reward for sucking dick. They take cell-phone videos of themselves sucking dick and then swallowing the all creamy goo that shoots out of guys' dicks.
I've started scrapbooking all the times I suck dick, so have a video record of all the guys I've sucked off in my graduating class, which was a part of my cadet initiation - to suck off any cadet who wanted a blowjob!