(adj) One whom often binges a lot of alcohol in a sitting to the point of being very intoxicated. A rinser generally holds alcohol in high regard to the point of borderline alcoholism. Rinsers can be spotted at the pub and at various social events generally making a fool of themselves, slurring words and have been known to stare out one eye to maintain vision ie rinsing their body with alcohol.
"Wow look at John, he's usually very well mannered"
"Haha, oh John, absolute rinser."