Johnnie-come-lately

Johnnie-come-lately

and JCL
n. someone new to a situation or status. This Johnnie-come-lately doesn’t know what it was like in the old days.
References in periodicals archive ?
Okay, the spelling might be slightly differen, and the stakes very slightly lower but Coventry's Johnnie-come-lately reacted in the same cool-headed way as his more famous namesake.