Unconventional
attractiveness or sexyness, especially with regards to a person who is considered to be mediocre or pedestrian in their appearance, but not
necessarily unattractive. Often the
attraction cannot be easily explained, meaning a person who sees another person's shmeck cannot say why they find them hot.
'Shmeck' generally pertains to a person's body.
Can be noun version of 'shmexy'.
"I never expected to like a bald person, but
that guy has the shmeck!"
"
Most people wouldn't go for
that girl, but she has some real shmeck about her which I can't resist!"