Compound word combining "slam piece" and "Back Burner". The act of keeping a slutty female or the more commonly known "slam piece" on the side in case other plans fall through so that a "brodude" may in fact "get his nut". Also known as a booty call.
Ryan:Yo bro you gonna hang out with that fine ass slammy you hooked up with the other night?
Shea: Nah dog i'm keepin her on the slamburner just in case I need to get a nut.
Shea: Awe SHITTTT!!!