Mine, I had this since I was in 9th grade, Im now 35. I've always used it on all net-boards since 1999.
I was always hard nosed at basketball and baseball. I was like Dan Eisel, always throwing my body into people on the basketball court, always getting knocked down and getting up...and on the baseball field, like lenny dykstra, I always went hard into 2nd and 3rd base. I played hard and got knocked around a lot, so my parents started calling me hardknock. I actually had it on my jersey at several all star games that i played in. once i started college and played baseball, the name just really stuck with everyone.
Weird story, but, what can i say.
Few actually called me hardknock (in college), but always HK. Though my initials are AW.