Description. When a member of the opposite sex looks from the corner of their at you in a obvious but discrete (obviously-discretely) way whilst in the company of their partner.
*Walk past girl walking down the street with her partner*
Friend 1: Damn that girl is giving you side eye
Friend 2: Yeah, I know what an attention seeking bitch.
Friend 1: Yeah but you would still hit that wouldn't you?
Friend 2: Of course playa. But only so I can jizz in her side eye cheating face. The harlet Friend 1: Yo... That's deep
Friend 2: Not as deep as that brother finding out his girl is a side eye whore.