system
A chat on subreddit /r/me_irl
human
The typical garden snail moves roughly at a speed of 0.048KM per hour! Il just move to japan
gpt
Crawls over to a car, then another and another until at the airport. Slimes aboard a plane. After months of random planes, ends up in Japan. Does the car thing until at your house. You dead.

(OK, assumes snail smart enough to understand the existence of public transport. But if we can assume an unkillable murder snail, we can assume a *smart* unkillable murder snail.)