when someone slyly makes fun of you, in a deceitful and possibly passive aggressive way. most common in the american heterosexual dating world or in sororities.
There is one person who perfectly encompasses the intelligence that must come from behind the side diss, Barney from How I Met Your Mother.
âWow, your confidence is inspiring. Itâs like watching a chihuahua bark at a Great Daneâadorable, but⦠you know, pointless.â