An expression of esteem, respect, affection, or admiration used to mask a complaint.
Close cousin of passive aggression.
1. That was a very delicious recipe you made at the Manbque last night, it made everyone else's seem like regular old zebra shit. Thanks for the complimaint!
2. I don't want to sound like I'm making a complimaint, but your wife has great tits, I feel like I'm sucking on swollen warts that have grown nipples with my old lady!