As a noun, this slang term refers to individuals that are quick to offer a disingenuous handshake and smile. Although interest and affection from this person may seem legitimate, the severity of their fakery can range anywhere from half-hearted respect of social customs to malicious attempts at separating an individual or group from their money and dignity.
May also be used as an adjective, referring to the act of engaging in the above behavior.
Popularized in 1996 by Maynard James Keenan as lyrics in the song Ænema, performed by the band Tool.
"That used car salesman is being very smiley gladhands."
"I don't want to play smiley gladhands and hang out with your coworkers."
The eyes that a member of the opposite sex subconciously gives you that makes you feel as if they want to marry you, buy you a house, and have babies with you.
He was totes giving you silky eyes while we played Dutch Blitz the other night.