Jake's relationship with his body didn't leave much room between an emotional reaction and the physical one. Split second instincts were crucial when it came to most of his shape shifting, which was maybe why he found himself at Finn's side before he could fully grasp what had happened.

Grass stains, dried blood, Finn's strange dead voice... Jake needed to focus. He needed to say the right thing here.

"Heh, uh. Yeah, you reek, pal." No! Wrong! Bzzt! "C'mon, I'll take you--"