The classic machete of erotic dismemberment

Your whole body clenches at the sensation. The goblin chief stares at you with a knowing grin on it's face. As you come down from the orgasm, you see your arm laying there on the ground. But where there should be exposed innards is covered in a layer of pink light. You check the attached part of your arm and find the same light forming a hard surface over the wound. As you become visibly confused, the goblin chief laughs at your misfortune.

You manage to break your stupor and collect your thoughts enough to think. You could try to go for your knife with your non-dominant hand, but that could leave you ****. you could also try to gain some distance and find something in the room that might be useful.