Rampage lets out a choked gasp, then an exaggerated sort of gurgle - honestly, it's a pretty good imitation of someone dying, he's heard it enough times - as he stumbles slightly towards Sideswipe, optics open wide, imploringly...

And then Rampage simply straightens up and steps back, sliding his body off the sword. As the wound quickly beings to seal itself up, he falls back into wild laughter. He'd expected to unsettle the Autobot with his uncanny healing abilities, but he hadn't realized how disturbed Sideswipe would be about simply stabbing him!