Someone who condemns a thing but does that exact thing themselves. E.g. someone who comments on an Instagram post "Attention seeking behaviour" implying that such behaviour is to be frowned upon, but in so commenting they have invited attention. Such folks might then get into
massive long
flame threads if picked up on this, inviting yet more attention. In the end they may have scored more attention than the
OP.
A: "Attention seeking behaviour"
B: "Dude, you're such a hypocrite"
A: "I'm not a hypocrite, you
creep"
B: "Are so - you telling me you
posted that comment hoping *
nobody* would notice? Hypocrite."