I wouldn't have thought a human being with half a functioning brain
could get caught under one either, but those nasty bruises on your
shoulder clearly weren't gerbil bites!
Presumably your argument will be that the area was not sufficiently
idiot-proofed, by way of signage saying something like, "Do not stand
under doorway after pressing button, you lackwitted gimp". Of course,
you could also argue given your poor command of the English language,
that your employer should well have known what a dolt you are, and
should have provided suitable warning by way of diagrams as well,
perhaps showing a portly stick figure being crushed by an obvious
object...