Depends on what method of shrinking and what materials the box is made of. If it's strong enough to harm you, possibly kill you, then horrifying; if it's not strong enough to harm you, no big deal.
being stuck under a house full of sewage leaks, fermenting trash, and heroin needles from junkies.
We'll murder them all, amid laughter and merriment...except for the few we take home to experiment!
"I cant see S***! --YOU GO TO HELL!" --Tourettes guy