a light smack upside the head, the intensity of which is more akin to ruffling someone's hair than to any real attempt to actually smack or harm the person. Originally heard/learned by submitter in: Montreal, QC, Canada.
She laughed at the teasing and gave him a quick smuck of warning.
She arched a brow at the taunt, and smucked him in response.
Definitions include: An unlicensed bar or nite club usually open well after legal closing hours. Seems to be of Southern US origin, I have heard its use in Detroit, Chicago, and Milwaukee. After the show, we went to that blind pig on 26th St and stayed until dawn.