Jack the Lad
1. adjective
bad. Rhyming slang UK, 1992
2. noun
1
someone noticeably sharper, smarter or smugger than the rest; a rogue. In Prison Patter, 1996, Angela Devlin notes that this term is used to excuse dubious – possibly criminal – behaviour by young males UK, 1977.
2
in criminal circles, an exemplary criminal UK, 1974