Adj. To engage in sexual activity with a man who is so well endowed that it feels as if your are being poked in the spine.
Wow that guy last night was so huge I feel like I got Spine Fucked.
by 526PLM April 02, 2009
To rip someones head off and thrust your penis down the spinal column until ejaculation.
That bitch just wanted to get spinefucked
by EJD May 23, 2003