Green’s Dictionary of Slang

(US) to perform a slam dance; thus slam dancer n., one who dances in this way.

1978		R. Price Ladies’ Man (1985) 249: Hundreds of guys slammed and barraged by lights, jungle disco [...] and sweat.
1980		L.A. Times 29 June (Calendar) 3/2: Other club managers and regular club-goers blamed the violence on organized Huntington Beach-area punk gangs who make a practice of pummeling each other and Slam dancing at area clubs.
1981		L.A. Times 5 July (Calendar) 5/1: Robert Louis Stevenson, the original author of this classic-turned-silly, may slam-dance in his coffin.
1983		G. Tate ‘King Sunny Adé’ in Flyboy in the Buttermilk (1992) 61: I am two seconds off this white boy’s ass because he starts slam dancing to Sunny’s music – with no respect.
1989		Palm Beach Post (FL) 21 May 142/3: Here, they prepare to slam into a ‘head-banger’ who is a fan of heavy metal music. The skinheads call this slam-dancing or moshing.
1994		J. Wambaugh Finnegan’s Week 277: The early Saturday evening mob of U.S. teens and young adults who descend on Tijuana to get drunk, slam dance in nightclubs.