We're not joshing when we tell you that "JK" stands for this
Archive - Show #5565, aired 2008-11-14 [PAR] Nov 14, 2008 ... Nicholas Hammond played this superhero in a 1978 TV series; you may be more 
... We're not joshing when we tell you that "JK" stands for this... [DOC] [TLE] Urban Dictionary: just kidding [PAR] You were actually serious but decided what you said was actually very mean 3.