1st was Quiet Riot opening for ZZ Top at the Cow Palace in San Francisco 1984. As a 17 year old, got asked at least 10X on the walk from the parking lot if I wanted to buy drugs. We - my brother and brother in law(both 10 years older) stood about 20ft from the stage. After the heavy metal crowd thinned after Quiet Riot, huge biker dudes started making their way in. My brother says we should move closer to the stage. When ZZ Top comes on he says turn around and look back at the crowd behind us, all of those bikers girls were on their shoulders taking their tops off to flash the band - it was definitely an eye opening experience for me. Next day I had serious concerns about whether I would ever hear correctly again.