An individual that uses smug and often sarcastic comments to deliver thinly veiled put downs. The person that delivers smarmy comments.
"How dare you call me smarmy?! You are the true Smarmer here!"
"Keep your shitty comments to yourself you fucking Smarmer"
An extended, or embellished version of the word "smarm," meaning sleazy, or smugly self-satisfied.
"Oh the smarmer and the sleazebag should be friends!"
--Old Southern Folk Song