Noun. A loveable rogue; someone who is untrustworthy, but charming. A crook, but more con man than hardened thug.
Often used playfully for naughty boys, skirt-chasing Lotharios or used car salesmen. Orig. Slovene or Slavone (Slovenian); in days past, many travelling salesmen hailed from that region, gaining a reputation as wheeler-dealers. Like Tschechern (verb; to drink alcohol excessively, to chug), which stems from Tscheche (Czech), an interesting example of a pejorative term where the original meaning has been forgotten, leaving a term of endearment.