Fergie Runs a Knife Down Slash's Chest

Should Slash file a restraining order against Fergie?!

In his kinky new video for "Beautiful Dangerous" (from his self-titled debut, out now), Fergie guest stars as a crazed fan of the rocker and fantasizes about him in her cockroach-covered apartment.

Watch above as she ties the ex–Guns N' Roses guitarist to her bed, licks his chest and teases him with a knife.

Incidentally, Fergie, 35, came up with the dark concept.

"I wanted to stalk him -- just a normal day at the office!" she tells Us.

Says Slash, 45: "She nailed it."