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1.
1. in a role play or fanfiction, to write something that focuses specifically on two or more characters of the same gender having sex.

2. to bang someone of the same gender.

3. to be a forty-year-old man sitting in a trailer park in wisconsin, drinking beer and beating off while talking to little boys on his dial-up internet.
1. the slashbanging in that harry potter fanfiction was so over the top.

2. dude, josh and eric were totally slashbanging last night.

3. "whutcha doin' with that there computer, tom?"
"oh, y'know, slashbangin' this kid."
by mollyfish November 01, 2007