This is a “cover” of Hand of Doom by Black Sabbath that uses none of the original lyrics. While the original is about drug addiction, especially among soldiers with PTSD, this version is about killing a girl to engage in necrophilia.
Slip the knife right in
Blood is running red
Cut the stomach right
I start to crawl inside
Pull the skin apart
Now it's getting hard
Start to slip right in
Blood is getting thin
See the world surround
Watch the bloody ground
Put her in the ground
Her cum is all around
Put my finger in
It's just a little thing
When I take it out
It's in a bloody mouth
Make my dying bride
I part the bloody hide
Put my dick right in
Her cum is getting thin, woah