To be associated with someone who’s such an asshole, that you are viewed as an asshole as well.
Great, I totally blew my chances with Cindy because she found out I hung out with Scott! Total guilt by assholeciation!!
1. to be connected with, or be related to an asshole.
Though he himself not an asshole, Dave is assholeciated with Warren, an arrogant selfish prick asshole.