Slam dancing started when punk rock music started. It is the original form of "moshing". Back in the mid 70's and in the 80's punk rockers slammed danced. There wasn't any hardcore violence involved. Ask anyone who actually lived through the era of punk rock and they will tell you the truth about slam dancing. "Moshing" is a new term for slam dancing but isn't slam dancing at all. Slam dancing basically consisted of jumpin around and not really doing any actual dance moves. It wasn't purposly violent dancing.
"Hey look at those scenester kids "moshing" and thinkin they are slamdancing."
Verb: when you are losing a fight and you have no other options. ~Retaliation disco slam dancing~ start flailing your arms and legs in any way to flop either into, or away from your enemy.
the pizza man touched my chicken wing ~retaliation disco slam dancing ensues~
Form of dancing brought about by early punk and thrash bands, now mainly used in the presence of modern hardcore and metalcore. Unlike a general mosh pit, slam dancing actually shows signs of enjoying the music and having a brain. By using kicks and punches, the dance is a way to let off violent energy without actually hurting anybody.
There's too many nu-metalkidsgrinding on each other's bodies for us to go slam dancing.
A form of "dancing" used by pre-pubescent scenesters and older emo/scene eunuchs alike. These people are not true music fans, they go to shows to be seen by their friends. This display of jackassery annoys the piss out of true fans, who end up beating the scenesters to bloody pulps between sets. These kids don't have the nuts to mosh.
At the Dream Theater/Opeth/3/Between the Buried and Me concert yesterday, the mosh pit started when some asswipe's slam dancing connected with a Dream Theater fan. The true fans around beat the slam dancers down mercilessly.