Spooky! Must be a 40-something male thing. I was into Slade marginally more than T Rex at the time. I used to run home at lunch time on whatever day the new singles chart rundown was on (Thursday?) and write out as many copies as I could of the top 20 in the hour and run back to school and sell them at 10p each to all the kids who stayed for lunch. I remember the excitement when Cum On Feel The Noize went straight in at No.1 - no-one talked about anything else all afternoon.
I then followed the Slade route into heavier rock stuff like Deep Purple, Led Zep, Thin Lizzy etc but then sold all that lot in early '77 after listening to Peel play New Rose, Anarchy, Blank Generation etc and my mate Kev playing me Damned, Damned, Damned. A real sea change in my musical beliefs. I guess I have probably only bought back some Beatles, Stones, Lizzy and for some odd reason Steely Dan from all that pre-punk stuff I sold.
Definitely no fighting though - we knew we were cooler than the rest - and so did they!
Cheers
Rich